Great tool! I use it almost every day in my work. It's significantly faster than KeyCollector (even though the latter is free). The service offers several functions right away. I, in particular, use the simplest one - collecting queries and frequencies through Wordstat. This allows me to filter out many irrelevant queries right at the collection stage. I personally know the founders of the service - they are fun and active guys who add new improvements to Rush Analytics every month. Overall, I highly recommend it!
