You can join the signature campaign at the forum.
Why the first thing you think of is the quick profit "from just posting"?
You need to learn, and from your knowledge, you can win a lot of money.
Read the rules, then learn any programming language (Java, PHP, C++) or Photoshop, Html5, designing.
Signatures campaigns will end in one day but learn a new programming language will enable you to earn a more protracted period.