It simply doest work as it should, nearly useless.
A LOT of times I had a group of healer, tank and dps queued for a dungeon and could not find another DPS. Once we waited for nearly an hour. It simply cant be that no DPS were looking for a group - and it was the daily pledge.
The problem seems to happen everytime the group finder put me in a 3 ppl group. Now I just give up and quit. Even if the other two players are tank and heal, the group finder seems unable to fill a group properly. And since Im a no-guild player this is specially infuriating.
I have a healer friend and we barely get to form a group via group finder . So whats the point of that SH*T!??