Week in review: Hacker jailbreaks iPad, Twitter buys maker of Tweetie

Here’s our overview of the week’s tech business news. First, the most popular stories published by VentureBeat in the last seven days:Hacker jailbreaks the iPad less than a day after release — A lot of people complained about the iPad’s closed-off software. But no one did anything about it — until last weekend, apparently. A well-known hacker of the iPhone, who previously defeated Apple’s restrictions on developers, claimed in a video to have hacked the iPad.

What to expect from Apple’s iPhone 4.0 OS event — Before Apple’s iPhone event on Thursday, we looked at possible announcements. It turned out that the big news was what many expected, namely support for running multiple applications at the same time.

ChatRoulette faces a stiff challenge in becoming a legitimate business — Video chat site ChatRoulette has been mocked by everyone from Jon Stewart on the Daily Show on down for the hordes of anonymous masturbators who sometimes lurk on the site. We examine some of the issues facing the site if it wants to make money.

Yahoo buying Foursquare for $100 million? Let’s check in — A report surfaced this week that Yahoo is considering buying Foursquare for $100 million. The story seems pretty preposterous, considering Foursquare is the hottest name in location-based services and currently has four top VCs all looking to invest in the company. One likely explanation: Foursquare has hired amateurish investment bankers who think a leak could drive up the bidding.

Review: Why iPhone OS 4 will make the iPad a knockout hit — VentureBeat’s Dean Takahshi argues that that the iPad is indeed poised to be the hit device that establishes the tablet computing category.

And here are five more stories we think are important, thought-provoking, or fun:

Twitter acquires maker of Tweetie, stoking concern among developers — Twitter bought Atebits, the maker of a popular iPhone client for the microblogging network called Tweetie. The acquisition represents a big sea change in the way the company has cultivated its developer ecosystem.

Mike Moritz regrets: He never patched things up with Steve Jobs — Tech pundits like to look forward, not back. But at a speaking appearance on Tuesday, Mike Moritz, a partner at Sequoia Capital, admitted to two regrets: passing on Netflix and never repairing his relationship with Apple CEO Steve Jobs.

Apple bans Flash-to-iPhone conversions in apps — Apple has made a change to the wording in the company’s iPhone Developer Program License Agreement, to which all aspiring app developers must agree. Apple pundit John Gruber translated the legalese to English: No Flash.

Microsoft VP: Google faces “long, hard road” in business software — Microsoft is launching Office 2010 next month, so we interviewed the man in charge of the Office team, Chris Capossela, to find out how confident Microsoft is feeling with its Office suite now that Google is trying to make a serious claim on the business-application market.

EcoFactor makes thermostats smarter with new $3.5M — There’s a shift taking place in the cleantech sector toward capital efficient investments. EcoFactor is a perfect example as a software product — an investment in the single digit millions goes a long way toward substantial and immediate returns.