Tip 10 - The Alliance means more content, but more people.

For whatever reason, the Alliance races as a whole (Humans, Night Elves, Dwarves, and Gnomes) are more popular with players. This can often mean severe crowding in popular regions along with what we like to call "mass extinction events". That basically means that several questswow gold in the area that require players to kill a particular animal may make it hard to find that animal for a while - and that you may be racing other players who are standing around waiting for them to spawn. The good news is that the Alliance has a lot more quest-based content than the Horde. While this isn't noticeable at the earlier levels, many Horde players often find themselves running low on quests around level 25-30 and being forced to just "farm" random creatures for experience.

World of Warcraft Horde Player Tips
Tip 11 - You will end up in the Barrens - accept it.
Throughout the beta process, the one zone that everybody complained about the most was the Barrens, a level 15-20 zone that is quite literally in the center of everything for the Horde. As a result, this zone has the dubious distinction of undergoing almost constant revisions. The good news is, it's much better than it was - the bad news is, it can still be long and tedious. The thing is, most Horde quest lines eventually send players to the Barrens and it contains access to one of the neutral towns where Horde and Alliance players can get together, so the place is absolutely crawling with players. While that can be good for making friends, it's also the place that's the most hunted and overcrowded on the Horde side. Unfortunately, the Barrens is just a fact of life for Horde players - better to go, do what needs to be done, and get out.