I have acquired through Less Wrong online contacts without in-person meetups first the following:
I have also hosted couchsurfers about whom I knew only that they were "some manner of subculturey".
With in-person meeting between the rationalism and the formation of relationship: Basically all of my in-person friends who I currently see on a regular basis are rationalists (albeit principally for geographical reasons), as are all my romantic partners and what I think amounts to a majority of my exes at this point. There's a rationalist choir now (let me know if you want in, especially if you sing soprano or alto) and it meets at my house. I have at least 95% convinced Eliezer to officiate my wedding as long as I don't make him write the ceremony too.
I can't join the rationalist choir (geographic problems and I can't sing), but I'm curious about the songs you sing.
I'd like to ask everyone: Have LessWrong.com and related online rationalist/transhumanist/Singularitarian communities connected you to people for purposes beyond discussion?
Bonus points if an online contact led to an important connection. We already know that face-to-face meetups are a great way to meet people, so I'm curious about connections triggered by online interaction.
I have seen scattered mentions that each of the above has happened, but not enough to get a strong impression of what's going on.
Please answer in comments below. By doing so, you'll be providing social proof that LW and the like can accomplish these things, and so encourage more to happen, increasing happiness in the world.
I added one myself to start.