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Frank Gruber, CEO and Co-founder of Tech Cocktail, and Travis Kalanick, a longtime Silicon Valley entrepreneur who runs online car service Uber--and is a Groupon client--responds to the company's presentation at SXSW, taking the opportunity to call them out for shoddy service.

In January, Mozilla announced plans to add a "Do Not Track" feature to Firefox, a tool that would allow users to opt out from having advertisers and other sites track their web-surfing habits. As Mozilla has readily admitted , the feature is far from perfect: Backwardly, tracking companies would actually have to agree not to monitor a user's browsing patterns, even once he or she opts out

From Video Commenting to iReport Integration, mobile consumers and videophiles are about to have a lot more on-the-go options from CNN.com--and presumably others to come.

The founder of the Web message board 4Chan took the stage at SXSW to explain how his new project, Canvas, could far exceed 4Chan's 12-million-user popularity with Facebook-friendly appeal. Like your daughter bringing home an ex-convict for dinner and saying that he's actually a "really good guy," Christopher "moot" Poole explained how the virtue of 4Chan--instantaneous collaborative creativity--could overshadow its darker, dirtier proclivities by gaining new life in a project called Canvas .

The next stage in the search engine wars has arrived: Microsoft is boosting its Bing system with a similar " instant results " feature to Google 's, bringing a pseudo-real time feel to search that aims to speed up the process significantly. Google introduced "instant" search feedback recently to increase the speed and efficiency of search--the system pops up a suggested list of search query matches as you're actually typing, just in case the results meet your needs before you go through the tedious business of typing out a complete search string. Now Microsoft, which is busy expanding Bing's search engine into a very serious rival for Google, is trying something very similar