The Atheist Community of Austin (ACA) has several weekly get-togethers. After each live episode of the Atheist Experience, they meet up at Threadgills. The first Sunday of each month they have lectures, and other Sundays they meet at Romeo's. There's also a womens group that is getting started within the ACA.
We don't schedule through meetup.com. We're, uh, independent. If you've been to a few Dallas meetups, you probably know Don. He's one of my favorite people. Announcements for the Frisco Atheists meetups have always been made on Frisco-Online.com - now they'll be announced on our group page here at the Nexus. BTW, our next meeting is the 22nd at 7:30 at the 2 Brothers Grill. Give me a holler if you think you can make it and I'll get some directions to you.
I've been there once or twice, and never saw any obvious group, so I figured that the page was outdated. I asked one of the employees if CCA met there, and he stated (paraphrased): "No, but I wish they would."