Systems and methods for predicting virality of a content item are disclosed. A method includes: receiving a social network structure; identifying communities within the social network structure, where communities are identified as dense subnetworks in the social network structure; receiving social network content that includes one or more content items; and identifying one or more content items that are predicted to become viral based on utilization of the content items between different communities in the social network structure.
Please help me write a proper abstract based on the patent claims. CLAIM: 1. A method for predicting virality of a content item, the method comprising: receiving a social network structure; identifying communities within the social network structure, wherein communities are identified as dense subnetworks in the social network structure; receiving social network content that includes one or more content items; and identifying one or more content items that are predicted to become viral based on utilization of the content items between different communities in the social network structure. 2. The method according to claim 1, further comprising analyzing the social network content to identify new content items, wherein a content item is a new content item if there are less than a threshold number of instances of the content item in the social network content. 3. The method according to claim 1, wherein the communities identified as dense subnetworks have a larger proportion of connections between nodes within the community than connections to nodes outside the community. 4. The method according to claim 1, wherein the one or more content items comprise one or more of images, videos, webpages, metadata including Twitter hashtags, phrases, sentences, and names of people. 5. The method according to claim 1, wherein identifying one or more content items that are predicted to become viral is based on a number of nodes in the social network structure that have been exposed to the content item within a threshold amount of time. 6. The method according to claim 1, wherein identifying one or more content items that are predicted to become viral is based on a number of nodes in the social network structure that are connected to nodes that have been exposed to the content item within a threshold amount of time. 7. The method according to claim 1, wherein identifying one or more content items that are predicted to become viral is based on a number of nodes in the social network structure that are connected within two degrees of separation to nodes that have been exposed to the content item within a threshold amount of time. 8. The method according to claim 1, wherein identifying one or more content items that are predicted to become viral is based on a maximum distance between any two nodes that have been exposed to the content item within a threshold amount of time. 9. The method according to claim 1, wherein identifying one or more content items that are predicted to become viral is based on a number of distinct communities that have used the content item. 10. A computer-readable storage medium storing instructions that, when executed by a processor, cause a computer system to predict virality of a content item, by performing the steps of: receiving a social network structure; identifying communities within the social network structure, wherein communities are identified as dense subnetworks in the social network structure; receiving social network content that includes one or more content items; and identifying one or more content items that are predicted to become viral based on utilization of the content items between different communities in the social network structure. 11. The computer-readable storage medium according to claim 10, further comprising analyzing the social network content to identify new content items, wherein a content item is a new content item if there are less than a threshold number of instances of the content item in the social network content. 12. The computer-readable storage medium according to claim 10, wherein the communities identified as dense subnetworks have a larger proportion of connections between nodes within the community than connections to nodes outside the community. 13. The computer-readable storage medium according to claim 10, wherein the one or more content items comprise one or more of images, videos, webpages, metadata including Twitter hashtags, phrases, sentences, and names of people. 14. The computer-readable storage medium according to claim 10, wherein identifying one or more content items that are predicted to become viral is based on a number of nodes in the social network structure that have been exposed to the content item within a threshold amount of time. 15. The computer-readable storage medium according to claim 10, wherein identifying one or more content items that are predicted to become viral is based on a number of nodes in the social network structure that are connected to nodes that have been exposed to the content item within a threshold amount of time. 16. The computer-readable storage medium according to claim 10, wherein identifying one or more content items that are predicted to become viral is based on a number of nodes in the social network structure that are connected within two degrees of separation to nodes that have been exposed to the content item within a threshold amount of time. 17. The computer-readable storage medium according to claim 10, wherein identifying one or more content items that are predicted to become viral is based on a maximum distance between any two nodes that have been exposed to the content item within a threshold amount of time. 18. The computer-readable storage medium according to claim 10, wherein identifying one or more content items that are predicted to become viral is based on a number of distinct communities that have used the content item. 19. A computing system, comprising: a processor; and a memory storing instructions that, when executed by the processor, cause the computing system to: receive a social network structure; identify communities within the social network structure, wherein the communities are identified as dense subnetworks in the social network structure; receive social network content that includes one or more content items; and identify one or more content items that are predicted to become viral based on utilization of the content items between different communities in the social network structure. 20. The computing system according to claim 19, wherein the social network structure and the social network content are received over a network.