This is an interesting idea/website — http://www.noonhat.com. Basically you input your basic info (day & neighborhood where you can meet) and the website/cadre of little monkeys matches you up with strangers for lunch! I’m intrigued, and might try it when I have a day off (and therefore more than a 30 minute break for lunch).
Here’s a PI article about the concept:
http://seattlepi.nwsource.com/lifestyle/333834_noonhat02.html