You may already know about (and use!) the Bump app for iPhone or Android. The software from Bump Technologies lets users share contact information simply by bumping their phones together.

Well, that technology just went one step further. PayPal just announced a new iPhone application that lets you send money by—you guessed it—bumping your phones together. The app is currently free to download, but you must login with your PayPal information to use. The app includes a special feature that aids in the notoriously dreaded check-split, down to how to factor in tax/tip. Someone pigged out on a steak while you noshed on a salad? No problem! There’s a feature that helps you figure out who owes more too.

Read more about this money swapping technology here.

Yes, yes, Foursquare is everywhere these days. But what’s all the buzz about? And what is everyone saying?

Well for starters, the location based social networking platform was all the rage at this year’s SXSW. There were dueling parties between Foursquare and Gowalla, including attendance by Ashton Kutcher at the former, and DJ Diplo at the latter. Gowalla may be everyone’s favorite underdog, but Foursquare appears to be leading the LBSN pack, experiencing a phenomenal growth surge of 100,000 users in 10 days surrounding SXSW.

Read more Foursquare news here and here. Excuse us, we have to go count our badges now.