tnr1 Mate, don't listen to the others, they are trolling you! (Trust me bro, I camp horde almost for 11 hours everyday, I drink their tears as my only source of hydration.)
Best spot to farm horde, The top 5 zones are as follows: (As found in Horde_Statistics2016.pdf, which you can download at
http://akk.li/pics/anne.jpg yourself... It will redirect you to the database where the statistics are updated every hour, so you can stay in the loop any time!)
5.) Eastern Plaguelands. This is an absolute hot spot, with Horde activity ranging from 28-35 players passing per 10 minutes; 70% of which are horde, due to the fact that the Horde actually have a chain quest in that zone that's engraved in the heart of many die-hard horde people. They will never give up the opportunity to complete this chain quest! Apparently it gives amazing Experience, and the gold reward doesn't scale correctly, so you get a huge amount of gold when doing it.
4.) Desolace. This speaks for itself, due to the fact that the zone is in Kalimdor and within close proximity of Orgrimmar. Most low levels, no matter their race, head to Orgrimmar at level 10-13, so that they can do Barrens/Thousand Needles/Desolace. It's a really convenient leveling pattern, and you will see once you go there: It's packed!
3.) Shadowmoon Valley. The fact that this is 3rd really tells you something about the 2nd or 1st spot- because Shadowmoon Valley is like a big field of grain, and let's just say the yield is excellent ;) The hordes refer this zone to Netherstorm or hitting Nagrand at a late level due to the fact that it provides much better gear-quality than that of its closest competitors. Check near Black Temple, their main questing camp frequently sends them that way, which is perfect for you/us, because we like 'em when they are grouped up ;) -FAN OF KNIVES GGEZ-
2.) Winterspring. Nuff said, this is actually considered as general knowledge to us gankers. All I can say is: Go there, and see for yourself why SOOOO many gankers absolutely love this zone! Like shooting monkeys in a barrel x)
and finally, 1.) ...
You guessed it, It's Azshara! Don't be swayed by the opinions of sheep, Become the predator you are made out to be, and go to the den of lambs and go help yourself to some low-level noobs ^^ Low levels prefer this place due to the fact that it is such a lore-rich zone, and it is actually seen as one of the quietest zones for Horde to level in without Alliance intervention. The noobish gankers just go to STV or Thrallmar, and then "OMG GG SO fun" Without even giving this beauty a chance! Azshara .... OMG I probably killed 80 low levels within a matter of an hour! (Most fun hour I've had ever since I microwaved my kid-sister's hamster ^_^)
So there you have it mate! Happy hunting ;)