Wats the best way to farm gold at lvl 70 on the alliance in world of warcraft?

If you talk to players one of the best ways to get gold right now is to do dailies considering the constraints you put in your question.

I would recommend using wowwiki for a list of current dailies that you can do at your level and then try to plan them in succession with the least amount of travel time in between locations. With doing your daily limit of 25 you should get between 250 and 350 gold. One place with many dailies in one location is the Isle of Quel'Danas and you can port there after doing dailies in Outland. The portal is in Shatt.

Running old Instances as the previous person stated is also a good method however he did not mention the best instance to run which is Shadowfang Keep just West of SouthShore in Silverpine Forest. That one instance has a lot of BOE Rare items that sell well at the Auction House to level 19 twinks. Just run the instance as many times as you can before the cooldown period which I believe is still 5 runs per hour.

DO NOT BUY GOLD ONLINE, you will lose your warcraft account as it violates the terms of your player agreement.

I agree with Jacemora. Buying gold online will get your account banned. Following some sort of guide will help you learn how to level fast and efficiently. I recommend some sort of guide site like www.hiddenstuff.com or www.wow-pro.com for leveling. Hope this helps!

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Agreed with Jacemora - buying gold is a quick way to get yourself banned. Trust me -- Blizzard knows and spots it REALLY easily.

Dailies are the most reliable way to get gold and now, since you can do up to 25 dailies a day, you can earn quite a lot. Not as much gold at lvl 70 as you can at lvl 80, but still a lot.

Other methods include gaming the auction house -- find items to buy low and sell them high. You'll need the add-on "Auctioneer" to do this. This is a pretty good tutorial to get you started: http://www.world-of-warcraft-tipps.de/guides/gold/how-to-make-lots-of-gold-in-world-of-warcraft-with-auctioneer.html

You can also do herb gathering, mining, skinning, etc. -- the stuff you get at lvl 70 still sells well due to people buying resources to level up their profession skills. If you're going this route, get the Gathermate add-on -- it will show all the locations of herbs/mining notes/etc. Here's a quick tutorial on setting up Gathermate and the routing feature: http://www.youtube.com/watch?v=mhfx5G8pqdQ

True guides will make this whole process easier. You can get a good list of gold guides off of the Warcraft forums - check out this link: http://forums.worldofwarcraft.com/thread.html?topicId=13269517075&sid=1   Also, I run a Warcraft site and if you sign up for our newsletter you can get a list of good free online gold guides: http://www.goldguidereviewz.com/

Hope that helps!