Hello,

I am from the US and am in my mid-20's.

I am applying for the tourist visa with 2 re-entries and am wondering if after my time is up on my visa if I can just apply for another tourist visa? I am having trouble finding answers about this. I know I can add a 30 day extension to each re-entry but can I apply for another visa when I have used up all this time?

Yes you can apply for a new visa outside Thailand

Laos is a popular destination for a double entry visa

Yes you can. Theres is no limit to the number you can have. However, some offices do have limits to the number they will give without giving proof of income. 3 or 4 at the same embassy/consulate shouldn't be a problem.

Don't forget that along with having tourist visas you can mix in a few visa emempt stamps. Especially if you wish to fly out/in to neighbouring country. They can also be extended by 30 days. As has been correctly mentioned in many forums this cannot be overdone.