yeah, it's links and exposure. but think penguin.
however, try this.
create a forum thread that has value. one where the thread has comments. is shared in social networks. you're 'thanked'. is active. is the busy restaurant syndrome.
this thread will generate backlinks itself. your participations will have links to your site, to your profiles, your online properties, that have links to your 'money site'.
sure, it sounds 'SEO-ish'....but it's only marketing....and yet drive quality true organic links.
don't chase the algorithm.