With Foursquare seeing fast growth and starting to be embraced by elements of the mainstream (like their new deal with Bravo ), it might be decision time. A popular part of the gaming element of the service is gaining badges, virtual tokens that show you’ve done a certain task on the service. Most of these are clever, like the Photogenic badge when you check-in to three different places with photobooths.

We’re happy to introduce The Week in Green , a new item from our friends at Inhabitat . Each week they’ll recap the week’s most interesting green developments and clean tech news for us.

This month we showed you the best times to buy anything, all year round, highlighted a better way to tie your shoes, discussed some problems with the Apple iPad, and a whole lot more. Here’s a quick look back. The Best Times to Buy Anything, All Year Round You’re always hearing about off-season, post-peak times to save money on purchases and food, but it always arrives too late

Curious folks around the world enjoy a bit of hackintosh every now and then (although once is enough for many), but no geek has successfully ventured as far as Toni Nikkanen of Finland, who became the first person to run OS X on a phone — the Nokia N900 . As you can see in the video after the break, Toni’s hack relies on PearPC — a PowerPC emulator — to install good ol’ OS X 10.3 (Panther), but the mammoth sluggishness means it’s far from usable. Still, if you can spare 90 minutes for each boot-up plus plenty more for the snail-paced cursor, then head to the source to learn from Herra Nikkanen

Nothing in today’s featured office is extraordinarily expensive or custom built, but the office looks like it was designed by a professional thanks to a unified color scheme and use of accessories. Lifehacker reader Veronica Domeier made over her home office and since then she has been steadily tweaking the layout since. She writes: So this year I decided I needed some inspiration in my home office.

A new development in the Amazon vs. Macmillan fiasco. Amazon just posted an announcement indicating that it will be “capitulating” to Macmillan by selling the publishers’ books for their desired prices

I sat down with Brightcove CEO Jeremy Allaire at the World Economic Forum in Davos, Switzerland last week to talk about his business. Brightcove isn’t the sexiest startup out there. They’re a video platform – giving websites the tools they need to host and stream video, for a fee ranging from $100/month to “six figures per year” for the largest customers.

Developer and blogger Darren Beckett rounds up a crop of five e-readers and gives them a short price and feature comparison with the newly released iPad—and rolled the results into an eye-friendly infographic. (Click the image above for a closer look.) We may have our problems with the iPad , but that doesn’t mean people aren’t interested in buying it. This comparison pits the iPad against other similar devices, highlighting price, screen size and type, storage, input, multi-tasking, multi-function, and connectivity.

We recently highlighted personal development blogger Dragos Roua’s suggestion to treat yourself as a computer to become the best version of yourself. One of his suggestions: Defrag your mind. Here’s a closer look at what he meant.

Um, okay ? Just days after Apple introduced its exceedingly underwhelming iPad while simultaneously attempting to convince that masses that said product was the portable gaming device they had been waiting their whole lives for, Sony’s own hardware marketing honcho has come forward and extolled Cupertino’s decision to finally make the gaming leap. In a recent interview, John stated the following: “Apple’s entrance into the portable gaming space has been a net positive for Sony.