I had no problem finding a group for RFC or any other dungeon. And RFC is a low level dungeon where you get some decent quest rewards at level 14: bracers, pants, weapon.
I think the problem is how you go about looking for a group in the first place. Here’s how I do it:
- Do a “/who [low_lvl]-[high_lvl]”. So it would be /who 14-16 for RFC. You can expand the range if you don’t get enough members after steps 2 & 3.
- Send a whisper to all the tanks and/or healers in the search results, starting from the highest level. Something like this, “Hi, I’m assembling a group to go through Ragefire Chasm. Are you interested?”. I like to spell out the dungeon because it makes it more real to the recipient. And I ask if they’re interested instead because of you ask “do you want to join?” then they may say no as they might need to consider it for a bit.
- Once you get both a tank and a healer, search for DPS roles and add, “we already have tank and healer” to your whispers. They are more likely to join if you already have both those roles filled.
- Keep refreshing the /who results as new users may come online.
Copy/paste you message and send to up to 50 people at once. I have never not gotten a group together with this method except once when I tried at 3am server time.
Edit: if you’re a really greedy bastard (like me) you can avoid whisper to those with the same armor class as you. That way, there is no competition for rolls on greens/blues.