I think this is the best idea that has hit the web in years!
The www.ifttt.com website, lets you create tasks around all your Social and not so social life using the Internet as a reminder! Imagine every time you check into a certain FourSquare venue, you automatically send an SMS to your best mates to meet you there! Is that just FANTASTIC or what?
I am not even brushing the tip of the iceberg here. Visit http://ifttt.com/wtf to find out more. COOL LINK Ha ha ha LOL!