Y Combinator-backed Interview Street is accelerating the pace of its CodeSprints , where programmers prove their worth to potential employers by completing coding problems in a limited period of time. The startup held its second big CodeSprint last month. The event seems like a success — 5,221 people participated , 665 of them actually applied to companies, and co-founder Vivek Ravisankar tells me that more than 100 of those applicants are now in the final round of interviews.

CEO, Hearsay Social

Mr. President, I’m glad your administration has taken the time to craft what looks like a fairly forward-thinking and potentially globally influential policy towards consumer privacy on the internet . No doubt it will have to be snipped here and built up there and the fast pace of the technology world may make some of its provisions quaint after a few years, but overall it seems strong, and fair to both companies and their consumers.

Advertisers can now target Facebook users by broad category and precise interests at the same time using the Power Editor tool, according to a company spokesperson. We’ve also learned this is available to Ads API partners. In the traditional self-serve ad dashboard, advertisers have to choose whether to target broad categories or switch to precise interest targeting

Today Facebook rolled out a limited redesign of Groups , featuring a big new Timeline-style cover image, and a prompt for users to prominently label “What should people post in this group?” See, if you’re not careful, your intimate Facebook Groups can balloon in population and stray off topic generating annoying notifications for everyone. This redesign makes Groups feel more close knit, and will encourage them not to devolve into a chaotic array of kitten photos, political diatribes, and self-serving announcements. After all, that’s what the news feed is for

CRM giant Salesforce just released earnings this afternoon, beating Wall Street expectations. Non-GAAP diluted earnings per share was $0.43 for the quarter. Total Q4 revenue was $632 million, an increase of 38 percent on a year-over-year basis

There have been a few walkie-talkie mobile apps that have come out on iOS and Android over the last year or two, but it wasn’t until last fall that one of them had a breakout moment. Voxer suddenly hit it big with the young black community in Cleveland and a few other big cities last November. Since then, it has spread to the rest of the world , topping the app store and gaining a wide range of users – including venture capitalists on Sand Hill Road here in Silicon Valley

Mozilla took a moment  this morning to remind everyone that it invented Do Not Track in February 2011, was the first to implement it with Firefox, and that 18 percent of mobile and 7 percent of desktop Firefox users currently have it activated. Now the  President and competitor Google Chrome are joining  the bandwagon, but Firefox offered Do Not Track since before it was cool. Enforcement procedures for Do Not Track and the Consumer Privacy Bill of Rights are still in the works, but Mozilla expects DNT to be voluntary and the Federal Trade Commission to act against companies that commit but then stab users in the back.

Tiny Hearts , the Toronto-based studio behind Pocket Zoo , a top 50 iOS app (and one of my kid’s personal favorites), has just released a new title that turns Instagram into a game. The new app is called InstaMatch , and it’s a modernized take on the classic memory matching game

Editor’s Note:   TechCrunch  contributor  Semil Shah  currently at  Votizen  and lives in Palo Alto; you can follow him on twitter  @semil This is one of those posts where the video itself and the subsequent comments will be far more interesting than anything I can possibly write, so I’ll just briefly set the stage.