Reference http://www.gametracker.com/forums/forum.php?site=1&thread=105356

Anyone with Bot in the beginning of their name is reported as a bot.

What GT should be tracking is per SteamID instead of display name.

For bots, steamids will return 90071996842377216 (equivalent to STEAM_0:0:0) for the first bot to join. For each additional bot, the number increases by 1. So the next bot will be 90071996842377217 (STEAM_0:1:0) then 90071996842377218 (STEAM_0:0:1) and so on. Generic SteamID's instead of the normal ones.

Tracking per name is unfair to lower player stats and rank, as the server owner cannot dictate the clients name.