I've been doing some research trying to find an alternative to Tweet Adder 4, and I came across this Hummingbird software hummingbird4twitter(DOT)com It looks like exactly what I'm looking for with the auto follow feature, auto followbacks, etc. but I haven't been able to find any recent reviews on it. All the ones I've found are years old. Anyone here have an experience with hummingbird or currently using it? Thoughts?