I got an email a couple of days ago from a reader who's looking for a good resource for daily quests:
"Do you know of anyplace I can get a list of the professions dailies (yep all of them , or most anyway) and the level required to participate in them? I read about dailies and have no idea if I can find them, participate or even find them! I find a few, but am totally stumped."
With all the new crafting dailies coming out, I can see why there might be confusion in this area. So I thought I'd share this question and try to come up with some answers. My first stop for a question of this type would be WoWWiki (now known as Wowpedia). They usually keep lists of things like this. Unfortunately this page has just a partial list: Wowpedia Daily Quests. This list only includes the new Cataclysm Cooking/Fishing/Jewelcrafting quests. But we all know that there are more quests in Northrend and Outland.
A little more digging turns up this page for Cooking: Wowpedia Daily Cooking Quests, which seems to have a much more comprehensive list. Both Burning Crusade and WotLK daily quests are included here. Here is a similar list for Fishing Daily Quests. That leaves just Jewelcrafting as the remaining profession with associated daily quests. You can find a list of all Jewelcrafting quests on Wowpedia as well. Wowpedia has kindly listed all of the level requirements in brackets next to each quest, so you can see if your alts are qualified to do them.
Unfortunately there's not a central location for all of these daily quests. But hopefully with these three lists you can find what you need. If anyone has found a better source for this information please let me know!