The Top FiveSightSpeed 5.0 (beta)

SightSpeed does video calls better than any other public service—and it's free, too. You can make unlimited PC-to-PC video calls and voice calls, text chat, and even send video e-mails, though they can't exceed a minute and they're stored for only 30 days. Want more? For just $4.95 a month, you get video conference calls, group text chat, and video e-mails that last forever.

Think of it as an online scrapbook. With Clipmarks, you can easily cut and save little bits of info from the Web, as much as you would from a newspaper or magazine. You can annotate them. You can organize them. And of course, you're encouraged to share them. This is one tag-happy social-networking site that's actually worth using. And it's free. 3.0 for Windows beta

100 million people can't be wrong. That's how many Netizens are registered for this groundbreaking PC-to-PC VoIP service. What's a PC-to-PC VoIP service? it's a way of making phone calls without a phone. Skype users can call each other all day long for free, and within the U.S. and Canada they can even dial traditional phone lines and cell phones at no charge. Talk about long-distance savings. Join now, before that U.S. and Canada deal goes up in smoke. York Collections

Windows Live Local
Yes, Google did it first. But not like this. Microsoft's AJAX-ilicious local search engine makes the yellow pages obsolete by finding and mapping retail stores, restaurants, bars, and the rest. The 2D mapping tools work just fine, but your jaw will surely drop when you see the bird's-eye views of cities like Los Angeles, New York, and San Francisco. It's almost as if you're flying Superman-style over the rooftops.

Heavens! Another tag-happy social-networking site that's actually worth using! LibraryThing is a social network for bibliophiles. That's right: Bibliophiles. Just as Flickr built an online community around digital photos and MySpace built one around hideous home pages, LibraryThing connects people through their book collections. To date, more than 92,000 people have catalogued their personal collections on the site, posting information about more than 6.5 million titles.