We like the "tree" in #7, but there is a little too much emphasis on the tree instead of the name. Also, we're leaning toward a single line presentation so that it will fit in the top header bar of a web site and scale down easily. Think of Facebook or Twitter.
#6 is very difficult to read. If looks like "Likable" to us.
We like the simplicity of the colors in the symbol of #14. The others have a little too much going on. We would like to see a better treatment of the word so that it stands out a little more. Think Twitter and Foursquare.
Can you fix the "f" in #43 so that it doesn't hang below the line? Also, I like where you're going with the 3 little swooshes, but I'm curious if we can transform those into something more tangible. Like make three overlapping boxes or maybe little quotation boxes? I really life the current font you are using.
#49 looks good. I was thinking more along the lines of "speech bubbles" instead of "apostrophes". I like the square shapes, just wondering if you could cut the tails off and make them more triangular.
Thanks for the updated versions. I'm getting feedback that the speech bubbles make it seem all about "quotes". Could you try the same layout, but make one of the speech bubbles a "polaroid" picture and one of them a video icon (filmstrip, camera, something)? Just a thought.