I've met a few people who I knew online in real life. Most of them were more acquaintances—I met them at a con while I was with a friend who also knows and is friends with them—but a couple were people I considered friends. There are a few people I'd love to meet irl (hell, it'd be cool if the entire Yu-Gi-Oh! Arc-V cast in one of the RPs I'm in met, though that'd be difficult since we're all from at least four different countries...), but I don't live near any of them, alas :c