Listen to me, dammit!

Aagh this happens to me to some extent too. I'm naturally shy though, but if I suggest something in almost any venue apart from my good friends, then I just get a blank look or an "oh really?" and whoever was 'leading' just goes on about their ideas which everyone agrees upon. One of my friends talks to me a lot and with enthusiasm as well, but I am totally out of the picture when our mutual friend comes in, which causes my two friends to totally ignore my words, even in those instances where I try to jump in. Again, "oh really?" or "uh huh" is what I get, and they just carry on without me. For what reason, I don't know. I'm not desperately trying, and I only try every once every 10 minutes or so, so you'd think that would be sufficient time to jump into a conversation or discussion, but apparently not.
So I can relate:
My best results unfortunately come when the 'leader' has run out of ideas, that's when people appreciate my ideas, and then look to me. Then I pursue that, and make sure to get my point across, while letting others go on at their appropriate times. I guess what I mean is that there seems to be a very critical timeframe that you have to take advantage of, at least that's what happens with me. You're forced to be assertive, but open. Direct, but receptive. It's a delicate situation :s Good luck though, I hope this will be the case for you too

Oh ya, and I should add: I really dislike when people are desperately seeking fit in. So I've sworn off doing that in any situation. It turns out the people that I have made good social conversation with are open and receptive, unlike the attention hoggers who like to always be heard. If a person wants to talk or listen to me, then they'll pursue the conversation no matter how moot the point I made was. If not, then whatever, I won't want to talk to them also.

Jam it back in, in the dark.