Thanks for your designs. I don't like the letter a that you used there. However, I like design #21 except that the live should not look like it fell. Perhaps it should be floating and pointing to socializer. I like the shade that it drops on the "floor".
I like #15 but change the font and use a space between words. Also, I would be curious to see the bubble less puffy, perhaps more a rectangle with slight rounded corners and minimized 3d effect and also try it in a nice orange.
I'm sold on the icons that you use. #27 looks like a computer, the one on #16 looks like a pda and #22 looks weird. Perhaps you can try a different simple icon that shows a webcam lens only.
#30's icon is closer to what I like except that looks like an eye instead of a lens.