Structured like an app store, new site presents itself as a lesson plan marketplace for everything from fitness to language learning. Note to founders: you've got your work cut out for you in keeping the scam artists out.
Technically Incorrect: Claiming to be "new money," PayPal sneers at old money, including old men on bank notes.
Want to "Level Up Your Life"? In his new book, Nerd Fitness founder Steve Kamb turns to video games and other geeky pursuits to show you how.
With the Spreadsheets app, you can get your score for every carnal performance in the quest, perhaps, for self-improvement.
One Facebook addict's self-improvement project is another's snub. A sudden break from your social network--virtual or otherwise--can create some social minefields. Here's how to avoid them.