Yeah, most people tend to put their links into their sigs, be it to their homepage or their twitter/youtube/facebook account, or whatever else might be worth adding down there.
For the most part it's skipped past by most users, and only clicked by those who are actually interested to know more.
IMO : (Although I'm not an admin, here!) it's better to put a link in your sig and then be a social poster on the forum, so that people might occasionally see your link and wonder what it's all about, than to be one of those spammy people who only ever show up to post about their own linked stuff.
I definitely don't do that!!