This has been a problem in almost every MMO i've played in the last 15 years. I also think the tool works well, but have no idea why people can't use the darn thing. For some reason they would much rather spam the chat channel looking for other people to lazy to set up a LFG with a comment, perhaps if there was a simple choice when setting LFG, say a drop down that allowed someone to choose LFG for HEROIC X or Heroic B and so on, it would make it easier and people would actually use it.