I'm the Founder at YourSports. We're creating the sports graph--a social network for local sports.
Our first release is Plays, an iOS app that democratizes live play-by-coverage of any football game entirely into Twitter. We've taken play creation on your phone from 30 seconds down to 3: http://bit.ly/rsSo1C
Here's a bit of my journey.
Using MySQL as a NoSQL - A story for exceeding 750,000 qps on a commodity server - http://bit.ly/ahsJuZ
Even better, unlike every other player trying to compete with Apple, odds are you already have a PayPal account.
"The analogy here is to compare PayPal's release of [the mobile payment library, which is now integrated into Appcelerator] to the original Facebook Connect SDK several years ago," says Scott Schwarzhoff, VP of marketing at Appcelerator. "This time, instead of a social graph, we're talking about a commerce graph. And the numbers are large -- over 80 million [PayPal] commerce-related identities waiting to go mobile."