Vegan Wine?

I was recently surprised to learn that wine is often not vegan at all. Wikipedia explains:

Examples of animal products used as finings are gelatin, isinglass, chitosan, casein and egg albumen. Bull's blood is also used in some Mediterranean countries but is not allowed in the U.S. or France. Of these, casein and albumen (deriving from milk protein and egg white respectively) would be acceptable for vegetarians, but not for vegans.

I was thinking about this after reading an article on Raw Epicurean:

While wine is obviously vegetarian, not all wine is vegan. Animal products enter the production stream of wine in the form of fining agents. Fining is a process of clarification in winemaking. A substance is introduced into a wine and as it floats through the liquid it binds with proteins and then settles to the bottom of a tank or barrel. Common fining agents include bentonite clay (the vegan option), egg whites, isinglass (made from fish) or gluten based materials.

I would love it if anyone knows of a central list of vegan wines to choose from, or any good guides to figuring out if a particular wine is vegan or not!