Do you like new Columbia Heights institution Fro-Zen-Yo, located on the Civic Plaza? Then follow them on Twitter! They talk about new flavors and such, though it's not just the Columbia Heights location, as there are a few others too.
I was pretty sad to see Rita's close, but I'm a fan of Fro-Zen-Yo, and I don't really even like frozen yogurt very much. The red velvet flavor is awesome, and with the fruit and nuts, I can pretend that it's healthy.
Getting followed by them gave me an idea to start a Twitter list of local businesses to see what all the local spots are doing. Check it out, and let me know if I missed any. I'm @newcolumbiahts, by the way.