Mac OS X mouse acceleration

Install iMouseFix
It works.

Using Interfaces instead of Inheritance

The keyword is here "loose coupling". By using Interfaces we achieve loose coupling, because the consumers of an API do not dependt anymore on its implementation.

Bug me not - bypass compulsory registration

Have you ever got angry, trying to download something from a famous site (e.g. sun, or ibm) and you were asked to register for free to download the stuff?
Here is the solution:
http://www.bugmenot.com/
Thank you guys, and thanks to Otto showing me this.