Like Moonfalin, I'm pretty "meh" about the whole thing. Yes, flying around at high speed would be cool, but is it really necessary? I'm the highest level, and I'm keyed-- where do I need to go so fast? I know that some of my guildies farmed for cash and have already picked theirs up, but I'm not bothering with it-- I've already earned about 1000g just from my normal questing and instance running, so I assume I'll hit 5000g at some point, and I'll just get there when I get there.
The exception to this, of course, is the nether drake mounts that are coming. Those I really want, either from PvP (although the PvP one is hard-- as a resto shaman, I'm really terrible in the arenas) or PvE, and I'll be willing to farm whatever I need to to get one of those. So what about you-- did you farm your way up to 5000g quick (it wasn't that hard when BC first came out), or are you taking your time for a reward that just doesn't seem that great?