bitcointalk is the bigget comunity in bitcoin, if you are coder, or maybe desaigner you can sell your service with bitcoin payment processor, i think you can get more chance to earning money at this forum if you really have good skill.
That's right, and that is one of the best ways of earning bitcoins as i think from this forum, because you can earn as much as much you work with your skills and if you have interest in some field and you are also an expert in it so that can really help you in the world of bitcoin.
we can use LOAN system too, but in my religion loan with interest is not a solution, or maybe the other way we can selling real goods like computer, vga, motherboard etc. at bitcointalk, with bitcoin system payment