Regarding #13: I like the concept of using the letter "i" as part of the sling shot. I would like to see a more abstract sling shot though. The one in your graphic is a little too realistic. Also, I would like to see some "action lines" in the words... to indicate movement.
Regarding #57: it seemed to be a duplicate of #58, so I added it to my "not interested" bucket.
Thanks for the submission. Regarding #96, I am not crazy about using the dot of the i in the logo. Also, I would like a little more substance to the sling shot, and put it on the left instead of the middle.