TopixContent 
Usability 
Topix describes itself as "News on 360,000 topics, from Autos to your ZIP code.." It's a meme tracker that you can customize. Besides the ability to pick a topic from a huge list, Topix will also give you headlines based on a search query. So if you want to follow news about the mobile web, you enter "mobile web" in the search box and you have you own customized book-markable news tracker that will always show show you the latest news containing the string "mobile web". There are also featured tracks on the Topix home page for
Top Stories, Local News (by zip code), World, Business, Entertainment, Gadgets, Autos, Health, Games, Tech, Music, Opinion, Sports, NBA, MLB, NFL, Blogs and
Offbeat. Every page and search result on Topix can be rendered in a mobile version. There are no mobile specific urls for the mobile pages, Topix relies on browser detection to serve the appropriate version. I found the detection hit or miss, most Nokias, Blackberries and Treos are recognized as mobiles but some popular phones like the Motorola E710 and Samsung A900 are not. Opera Mini also gets the full page but handles it very well. Unlike Topix and Mini-Techmeme, not only is the list of tracked links mobilized but clicking a link usually leads to a mobile friendly version of the original web page. Topix links to the mobile version of the original site and if there is no mobile version, Topix creates one using their own transcoder which strips out everything but text. This process is inconsistent as some links lead to full-sized web pages particullarly in Topix' Tech and Gadgets sections.
