Nifty idea, but I can capitalize words and remove spaces pretty easily on my own without using a web app, especially under a 140-character limit.

Yes that is the point you can do it yourself or you can use the application.

In this case(You have to remove 15 spaces and capitalize 17 letters total 32, do you still want to do it manually? :) ).

YesThatIsThePointYouCanDoItYourselfOrYouCanUseTheApplication.

Could be a bookmarklet and could offer compressions other than CamelCasing, such as vowl-drppng.