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

Leaked Windows 8 slides: It’ll be like Apple, but ugly — A leaked set of Microsoft slides meant for PC-making partners details Microsoft’s plans, goals, and dreams for Windows 8, the next version of the company’s ubiquitous operating system.

Social game firm Crowdstar embraces Facebook Credits in five-year agreement — Crowdstar plans to get rid of its own in-game currencies and exclusively adopt Facebook Credits in all of its games said chief executive Niren Hiro.

Seagate debuts a 3-terabyte hard disk drive — Breaking a barrier for storage capacity, Seagate is announcing the world’s first 3-terabyte external hard disk drive.

3D maps: You’ll be able to walk around in them like a virtual world — We look at how two developments — the increase of geo-tagged elements and the increased power of mobile devices — mean that browsing a map will increasingly mean moving around in a virtual, three-dimensional world.

Google researcher says friend groups may give it a window to beat Facebook — If there’s an opening for Google in the crowded social networking market already dominated by Facebook, it might be in helping users navigate through their many friend groups, according to a presentation from Paul Adams, the lead for user experience research at the company.

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

Tesla’s IPO: After-hours trading, big winners, and what it means for green — Tesla Motors‘ IPO trumped even the most bullish of expectations Tuesday, selling 13.3 million shares for $226.1 million and earning a valuation above $2.2 billion. Here’s a quick look at who got what in the sale, and at whether Tesla’s success will make the public markets friendlier to green companies in general.

Hulu announces premium service, iPad app — TV-viewing site Hulu finally announced its long-rumored premium service, rather predictably named Hulu Plus.

IPOs make a comeback, but it’s a shaky one — There were 15 or 17 venture-backed initial public offerings in the second quarter of 2010, depending on who’s counting.

Joystick Labs starts seed-stage venture fund for indie video games — The Durham, N.C.-based firm is now accepting applications for the program, which will focus on video games that will be distributed via digital online channels.

Google CEO Schmidt gives crafty non-denial on forthcoming social network — Google chief executive Eric Schmidt wouldn’t publicly deny that the company is set to hatch a rival social network to Facebook during a speech in London, adding fuel to rumors that the search giant may launch a social service called Google Me later this year.