Is there value in self-promotion?

I'm trying a small non-scientific experiment tonight that you're a part of.

I've been struggling with the question of the value of linking to my blog posts on twitter.  It feels narcissistic to me to post every link on twitter.  Isn't anyone who cares about what I've written going to find my stuff in their RSS reader of choice or come back to the blog periodically anyway?  If my posts are good, they will get shared on twitter and/or facebook naturally, so I shouldn't have to link to them myself, right?

My primary audience is myself, so I shouldn't have to link to anything.  But, I do hope that somethings I say are useful, or else I would not bother to put them online. Plus, I know many people don't use RSS readers, and in lieu of the feed readers prefer to use twitter to discover blog posts.

So, I'm looking for thoughts from my loyal (also smart and attractive; did I mention I don't mind kissing up?) audience.  How do you prefer to find out about my blog posts?

Since this is a non-scientific experiment I am conducting, I will do the most non-scientific thing I can think of: state my hypothesis that I am testing.  ;)  My hypothesis is that my audience is too small (and smart, attractive and polite; there is no adulation I will not give out to you; I have no shame here, only on twitter) to give me any meaningful results of this experiment.

If I'm wrong, though, please feel free to leave me feedback via your preferred channel.

Thanks!