Well you need to think about what you want out of the meeting. Do you just want to get to know them as a friend... as a potential dating scene.. or sex?
I'd communicate it to them in advance. If you really want to get to know them, it will help eliminate those who are just wanting you for sex (and potentially a poor experience when you meet them).
I never (and I mean 99% of the time) don't have issues when I meet somebody. The reason.. we both know what it's about in advance and it is generally on my terms. Most of the time the experience is good or excellent.
Just be yourself and enjoy the time. It can be awkward I suppose, but I always do my best to make it relaxed, comfortable and welcoming... but
I love meeting others, you never know.. it might be a great friendship!
And one other thing. Don't chicken out. If I wanted you meet you and you blew me off, I'd probably think you weren't very grounded.. not a good thing to do to guys you might want to get to know.