Sorry for my bad english
When i press ability very quickly three or two times, game remember it and try to use it again after cooldown.
For example i use Slayers bearing with 10 sec cooldown and press it quickly 2 times, then sit on horse and after 10 sec i drop on the ground.
This video show how it works http://www.youtube.com/watch?v=fDwV_Wdhxpg
In fight sensation that i play with a high latency.