Guest blogging ?

I recently joined blogsynergy in which I thought was just a simple social network for bloggers, but apparently members can invite other members to guest post on their blogs.
I have received several invitations, so I asked how much will I get paid, but here is the thing about guest blogging that I didn’t know: as a guest blogger, I am not supposed to get paid with money but rather with a back link???

See original post by Trisha12