I don't think it's realistic that they are sending all my URLs, all my keystrokes etc. in a few hundred bytes. I tend to agree with you, but at the same time w

I don't think it's realistic that they are sending all my URLs, all my keystrokes etc. in a few hundred bytes. I tend to agree with you, but at the same time wonder how they're aggregating the data; they could store each day's raw data in however many GB, then crunch it down later. The only other potential issue that jumps out at me is bandwidth; I'd find it strange if the data isn't being compressed, but if it is, you could cram quite a lot of useful information into those few hundred bytes ;)