Here’s our roundup of the week’s tech business news. First, the most popular stories VentureBeat published in the last seven days:

iphone-4Apple fails to fix iPhone Daylight Saving Time alarm bug for US — If you live in the US, we hope you didn’t rely on your iPhone’s alarm clock to wake you up on Monday morning.

Microsoft’s Kinect gaming control hacked already — Just a few days after the launch of Microsoft’s Kinect motion-sensing game system, hackers broke the security behind it.

Gmail creator Paul Buchheit leaves Facebook for Y Combinator — Y Combinator, the increasingly famous Silicon Valley incubator, announced two new general partners Friday — Gmail creator/FriendFeed co-founder Paul Buchheit and Harj Taggar, who was already working at YC as a startup advisor.

The iPhone app is the Flash homepage of 2010 — In the late 1990s, it was common for companies to spend $50,000 to $150,000 for a Flash homepage that looked like a beautiful brochure. However, they soon learned that Flash was cumbersome, slow to load, expensive to build, and hard to update, and moved on to HTML. Guest columnist Peter Yared argues that the same trend is replaying itself on the iPhone.

Amazon’s secret retail empire — Jeff Bezos has a loud laugh. But’s founder and CEO is keeping quiet about his expansion efforts, which now include sites as varied as, Zappos, and as of Monday,

And here are five more posts we think are important, thought-provoking, fun, or all of the above:

hipmunk logoAttention, flight-search startups: Priceline, Expedia say hotels are where it’s at — Are today’s flight-focused travel-search startups like Hipmunk trying to solve the wrong problem?

Why Windows Phone 7’s first day sales numbers don’t matter — Following a flurry of online speculation about the sales of Microsoft’s new mobile platform, VentureBeat’s Devindra Hardawar said he’s becoming convinced that the actual first day sales don’t matter.

Are fleet sales the future of electric cars? GE will take 25,000, please — GE announced plans this week to make the largest purchase in the history of electric vehicles — 25,000 cars by 2015.

Privacy on social networks a concern for old, not young — Concerns about privacy on social networks have increased drastically since a year ago among older users, but not younger ones, a new study shows.

Will RockMelt’s social features shake up the browser market? — There’s been a flood of news coverage for RockMelt, a new Web browser that’s just opening to the public. The response isn’t surprising, since the founders have big ambitions and have been validated with funding from Marc Andreessen, the co-founder of Netscape. But there’s been some backlash too, in part because RockMelt’s promises sound awfully familiar.