The concept behind my logo is a branch, with a bird on it (direct relation to twitter). I have the map locations branching out from the original branch and marked with talk bubbles (to reflect tweeting). There are bigger ones for more popular topics, and so on. I also applied a twitter-type feel to the font/title that I chose, tying it all together into one cohesive mark.
Thanks for your consideration.
-Jake
(This comment references Entry #8)