> Are there certain neighborhoods that should be avoided on the basis of corrupt police activity?
No. It's largely a very safe city and a great place to live in. I've lived here for 16 years (2 in Lakeview, 1 in Uptown, 3 in the West Loop and 10 in Lincoln Square). If I can help answer any questions about the various neighborhoods, you can reach me via jeff@judge.io.
Per Facebook as of March 2015, 936M people use the service every day, 798M using their phone. I love Twitter too, but with 13% of the world using it every day, it's no ghost town.