I dunno, it feels kinda pointless? I mean... I wouldn't ever check those tbh... >.>
Yeah, I really find the concept of a self-promo thread pointless. All you really gotta do is put a link in your sig like I and a lot of other authors here do, and then let that be the end of it. For the rest, you just relate to others as a smart, interesting, informed, and likable person and maybe some people will glance down to your sig and notice you've got your own novel and decide that, since you're such a nice person, maybe you've written something good. If not, at least worth giving you a chance.
Yeah, a thread actually dedicated to self-promo is entirely pointless because nobody looks at it anyway. The promo in the sig, especially one that as unintrusive and short as possible (keeping it to just 1 line if it can be done) is really the most reasonable way to self-promote and then just let that be the end of it. Don't go out of your way to promote your novel beyond that. It's just annoying.
The harsh truth is, a lot of people are just not as good at writing as they think and it's the worst writers who crow the loudest about their own books due to the fact that their writing just doesn't have the power to attract readers by it's own merits, which means the lower quality writers try to make up for their lack of a draw with just talking about it loudly. Everyone knows this is how it works, even if they don't express it out loud, so that's why nobody is going to be interested in someone else's biased self promotion.