No legitimate poker web-site should allow these programs to be used.
Perhaps I'm mistaken but if these programs track the play of you and your competitors and report the results to you then that is BS.
If you can't take notes and/or follow the play of those you're competing against then you are a poor excuse for a poker player and a cheat.
Programs such as these ruin the on-line game by giving lazy, inadequate players an advantage.
I think your condemnation of the users of these tools is a little harsh, and a bit uninformed, especially since many of the participants in this forum use PT or HEM. But it's a legitimate opinion. Suggest you read through this thread and other threads regarding PT and HEM.
The sites generally distinguish between data-mining tools, which collect data on all hands for all players, and tools that track the hands you are in. In theory, you could do the latter with pen and paper - hard to do even at a single table at 50-75 hands an hour, but theoretically possible - the first is impossible for you to do as a player.
PT and HEM track the hands you're actually in (for the most part - the exception is "observed hands" where you're waiting to post the BB or equivalent), which in theory you could do with pen and paper. Many sites (all the major sites, I think) prohibit the usage of data-mining tools.
That doesn't mean it's necessarily legit to have a tool that replaces my pen and paper - but that's the distinction.
Note that there is a great deal of skill and hard work involved to become good at using the HUD to inform your play - again, try reading through a few threads about the topic. The guys who are deriving the most benefit from these tools had to put in a lot of hard work to develop those skills - I don't think the words "lazy", "inadequate", and "poor excuse for a poker player" apply here - regardless of your opinion on whether using the tool makes such a player a "cheat".