You get bitcoin through this forum you can join campaigns and wear signatures for them and also you can join free airdrops to earn too there are also possibilities to write articles or even use social media to earn some.
yes that is the common ways to obtain bitcoin here in forum. But for me there are more different ways to earn here such as creating services like BBCode design ,avatar or creating services such as "escrow" but must is trustworthy person . And last is investing and trading in different classified ICO's.