Yeah, I'll add some sort of "cookie tracking". It's just not done yet. There is some prior art at Fathom and Simple Analytics on how to do that while still preserving anonymity. I'm not entirely sure yet which approach I'll take.

I might make it an optional feature, too. Again, need to look in to it in-depth.

There are a zillion-and-one things to do, and thus far other things have taken priority :-)