Bucketlist.org - Log and catalog all the stuff you want to accomplish before you expire.
HelpScout - Help Scout is a simple, straightforward way to provide excellent support
List Challenges - Earn points for your life experiences. Find lists that interest you, and mark off what you've done.
SupportYourApp - Connecting talented people with the blooming IT industry to help them grow faster by outsourcing support.
Life Listr - ***AS FEATURED BY APPLE***
HelpNinja - Simple & Affordable help desk