There's nothing particularly wrong with it, but I've always viewed such threads with a jaded eye.  For one thing, it gives me an icky feeling when I see someone tooting their own horn, and for another I think most of these "I ranked up!" threads are a form of merit-phishing (and they usually succeed, too).

Having said that, I know it isn't easy to rank up anymore and that members are proud of themselves when they finally achieve the next rank.  It usually takes a long time to move from, say, Full Member to Sr. Member and that's in addition to all the good posts one has to make in order to earn enough merits to get to that next rank.  So I do understand that people feel good and want to thank the community....but I can't read anyone's mind and I've seen way too many threads where it's obvious that the OP wants merits.

In any case, as far as this thread goes, I have a feeling that it's not going to be utilized the way OP wants it to.  But we'll see.