This just in:
Got a tip on an "eclectic online community for people who already have a life" called IrishAbroad.com, which two Irish expats who live in San Francisco founded 10 years ago.
According to the website, "IrishAbroad.com is an Irish news and social networking website with over 240,000 members worldwide. The site is for Irish expats, descendants and any person wishing to travel to Ireland. Here, you will find news and information, community and friendship."
It also features free IrishAbroad Personals.
While I haven't used any of IrishAbroad's services myself, you may want to check them out.
Happy St. Patrick's Day!