Google Universe

Google Maps allows you to view maps of almost any street in the world with great detail.
What I liked about this application is the ability to plan trips and recieve directions as a function.
One aspect I didn't like about this application was that the street view function wasn't completely accurate. I found that the address it listed for my house wasn't the right one.

Facebook

Though there are allot of time wasting applications on facebook, I ultimately find it quite useful.
As a musician I find that creating events for shows is a very good promotion tool. I wouldn't hear about half the events I'd like attend without this.

Wikipedia

I found it difficult to find any errors in the articles i browsed. Most of them were grammatical and not having to do with the spelling. I found that there were fewer mistakes on the more popular articles rather than the more obscure ones. This is probably due to the fact popular articles are read and reviewed more often.