A traffic prediction component may automatically generate predicted traffic profiles for web sites based on tags that characterize the sites. An initial set of tags can be selected for a web site based on a set of predefined rules. An initial traffic profile may be selected based on the initial set of tags. The predicted profile of user traffic is then generated based on the initial set of tags and on the initial traffic profile.
Please help me write a proper abstract based on the patent claims. CLAIM: 1. A method comprising: characterizing, by one or more processors, a first web site based on a first plurality of tags describing one or more features of the first web site; determining, by one or more processors, a similarity of a second plurality of tags of a second web site to the first plurality of tags of the first web site; identifying, by one or more processors, the second web site based on the determined similarity of the second plurality of tags to the first plurality of tags; identifying, by one or more processors, a traffic profile of the second web site, the traffic profile of the second web site characterizing a behavior of a plurality of users while accessing the second web site; selecting, by one or more processors, an initial traffic profile for the first web site based on the identified traffic profile of the second web site; and generating, by one or more processors, a predicted profile of user traffic based on the characterization of the first web site and the initial traffic profile. 2. The method of claim 1, wherein the selecting of the initial traffic profile includes selecting the traffic profile of the second web site as the initial traffic profile for the first web site. 3. The method of claim 1, wherein generating the predicted profile of traffic includes recursively updating the first plurality of tags and the predicted profile of user traffic. 4. The method of claim 1, wherein the plurality of tags includes at least one tag that relates to an intended use of the first web site, an industry classification of the first web site, a primary language used by the first web site, a geographical location of a host of the first web site, or a visual layout of the first web site. 5. The method of claim 1, wherein the traffic profile of the second web site characterizes the behavior of the plurality of users relating to how long a typical user will spend at the first web site. 6. The method of claim 1, wherein the traffic profile of the second web site characterizes the behavior of the plurality of users relating to how many links a typical user will select at the first web site. 7. The method of claim 1, wherein the traffic profile includes values relating to a screen size of a typical user of the first web site or a type of browser of the typical user of the first web site. 8. The method of claim 1, further comprising: heuristically determining initial values for the plurality of tags. 9. The method of claim 8, wherein the heuristic signals include at least one of: directory information signals; lexical analysis signals; or geographical signals. 10. The method of claim 1 further comprising: recursively updating, by one or more processors, the first plurality of tags of the first web site. 11. The method of claim 1 further comprising: comparing, by one or more processors, the predicted profile of user traffic over a period of time to an actual user traffic profile over the period of time. 12. The method of claim 1 further comprising: selecting, by one or more processors, an advertisement based, at least in part, on the predicted profile of user traffic. 13. A computer-implemented method of modeling a predicted traffic profile of a first web site, the method comprising: assigning, using one or more processors, a first set of tags to the first web site for the first web site, each tag of the first set of tags describing one or more features of the first web site; determining, using one or more processors, a similarity of a second set of tags of a second web site to the first set of tags of the first web site; identifying, using one or more processors, the second web site based on the determined similarity of the second set of tags to the first set of tags; identifying, using one or more processors, a traffic profile of the second web site, the traffic profile of the second web site characterizing a usage behavior of a plurality of users of the second web site; determining, using one or more processors, an initial traffic profile for the first web site based on the identified traffic profile of the second web site; and recursively updating, using one or more processors, the first set of tags and the initial traffic profile to obtain the predicted traffic profile for the first web site. 14. The computer-implemented method of claim 13, wherein determining the initial traffic profile includes selecting the traffic profile of the second web site as the initial traffic profile for the first web site. 15. The computer-implemented method of claim 13, where the first set of tags includes at least one tag that relates to an intended use of the first web site, an industry classification of the first web site, a primary language used by the first web site, a geographical location of a host of the first web site, or a visual layout of the first web site. 16. The computer-implemented method of claim 13, where the initial traffic profile includes values relating to how long a typical user will spend at the first web site. 17. The computer-implemented method of claim 13, where the initial traffic profile includes values relating to how many links a typical user will select at the first web site. 18. The computer-implemented method of claim 13, where the initial traffic profile includes values relating to a screen size of a typical user of the first web site or a type of browser of the typical user of the first web site. 19. The computer-implemented method of claim 13 further comprising: comparing, using one or more processors, the predicted profile of user traffic over a period of time to an actual user traffic profile over the period of time. 20. The computer-implemented method of claim 13 further comprising: selecting, using one or more processors, an advertisement based, at least in part, on the predicted profile of user traffic. 21. A computer-readable memory device containing one or more instructions for execution by one or more processors, the one or more instructions, when executed by the one or more processors, cause the processing logic to perform operations comprising: characterizing a first web site based on one or more features of the first web site; identifying a second web site based on the characterization of the first web site; identifying a traffic profile of the second web site based on behaviors of users of the second web site while the users are accessing the second web site; selecting an initial traffic profile for the first web site based on the identified traffic profile of the second web site; and generating a profile predicting user traffic at the first web site based on the characterization of the first web site and the selected initial traffic profile. 22. The computer-readable memory device of claim 21, wherein the operation of characterizing the first web site includes using a plurality of tags to describe the one or more features of the first web site, wherein the plurality of tags include at least one tag that relates to an intended use of the first web site or that relates to an industry classification of the first web site.