Same here, I tell ya, same here.
I also feel the same way when people flash their (supposedly) academic credentials online for no reason, like someone else has done (or alluded to) many times on a thread and I had to laugh. I see this more often on MN/online (where it isn't necessary to state).
Once is passable but more than that (if no direct question is being answered or no actual reason for it), it just screams...I don't know, insecure/the need to prove something to oneself or strangers/to feel good about oneself/oblivious/likes talking about oneself so much that achievements (real or made up) really need to be known to feel more credible...I don't know, it just says something to me.
But perhaps it's just me: a bit cynical + I don't see the need unless it's an absolute must (which is rare on online chat forums) but some people do for different reasons. Oh well...
I don't believe any specific thing people say online about who they are/what they do/have done anyway unless there's solid proof. Perhaps because I've never needed to know this to listen to what someone has to say - if it's valid or not, it's valid or not, regardless of who you are/what you've achieved or not.
Like Shania Twain said, "that don't impress me much".
Never been starstruck either and see celebs as regular people, not more or less important. Some will surely be posting here just like every other regular person. This place can be very entertaining, something to pass the time with. It's not always about figuring out what's been said about them. What's the point of making yourself known? What's there to be gained, except to perhaps stir a little drama/cause a bit of fanfare for personal entertainment...and well, fans' enjoyment? I suppose that's a valid reason, really.