A cheater should be CLEARLY identified as one

Someone who uses computer assistance should be identified as one. It's ridiculous to have to play a whole game without being told about it while it is a known fact, as noted in their user profile.

They should be clearly marked as cheaters during a game. How are we supposed to know otherwise? Are we supposed to look at people's profiles at the start of every game?

Somebody didn't think it through.

Also, we should be able to prevent cheaters from taking our seeks, and not be able to take seeks from cheaters if we choose to.

I don't want to play against cheaters, I want to play against humans. This is just common sense.

Right. It is understanable that anti-cheating measures have a cost which a free site is unable to meet. But a simple "ignore"/"block" feature would help.