One of the most useful aspects of social media has been its power to help people discover people, content and ideas that they would have otherwise missed. Born from that shared desire for discovery has been an abundance of incredible web communities. Some, like Slashdot, focus on technology, while othersm such as Twitter, are mainstream open platforms for sharing.

Out of all of these communities, though, a few stand out due to their highly engaged web communities and their unique technology for finding the best of the web. Social discovery sites Digg, StumbleUpon, and Reddit are three of the best examples of what happens when technology meets community. This week we are asking you, the readers, to answer a simple question: Which one of these social discovery sites is your favorite? Or perhaps more in the spirit of our weekly Web Faceoff series, which one would win in a death match? While Digg may be the largest of the three social media communities, StumbleUpon has had its victories and all three have extremely passionate communities that cannot be ignored.

As always, you have the final say. This week's poll will close on Friday, December 18, at 12:00 p.m. PT. So make sure to cast your ballot, and then leave a comment telling us who commands your allegiance.

Web Faceoff: Overall Results

Week 1: - Mozilla Firefox vs. Google Chrome - WINNER: Firefox, 4600 votes (Chrome: 3310 votes, Tie: 911 votes)

Week 2: - Tumblr vs. Posterous - WINNER: Tumblr, 1809 votes (Posterous: 1496 votes, Tie: 256 votes)

Week 3: - Pandora vs. Last.fm - WINNER: Last.fm, 1187 votes (Pandora: 1156 votes, Tie: 122 votes)

Week 4: - Twitter vs. Facebook - WINNER: Facebook, 2484 votes (Twitter: 2061 votes, Tie: 588 votes)

Week 5: - WordPress vs. Typepad - WINNER: WordPress, 2714 votes (Typepad: 267 votes, Tie: 357 votes)

Week 6: - Windows 7 vs. Snow Leopard - WINNER: Windows 7, 3632 votes (Snow Leopard: 3278 votes, Tie: 121 votes)

Week 7: - TweetDeck vs. Seesmic Desktop - WINNER: TweetDeck, 3294 votes (Seesmic Desktop: 1055 votes, Tie: 260 votes)

Week 8: - Microsoft Office vs. Google Docs - WINNER: Microsoft Office, 1365 votes (Google Docs: 994 votes, Tie: 315 votes)

Week 9: - Apple iPhone vs. Google Android - WINNER: Google Android, 3323 votes (Apple iPhone: 1494 votes, Tie: 228 votes)

Week 10: - AT&T vs. Verizon - WINNER: Verizon, 1161 votes (AT&T: 538 votes, Tie: 118 votes)

Week 11: - Google vs. Bing - WINNER: Google, 2180 votes (Bing: 519 votes, Tie: 97 votes)

Week 12: - iPod Touch/iPhone vs. Nintendo DS vs. Sony PSP - WINNER: iPod Touch/iPhone, 704 votes (Sony PSP: 639 votes, Nintendo DS: 482 votes)