I'd be very careful. People can have totally different personalities on the net.
Having said that, I've met loads of people from the net, I'm not just talking dates, just as friends, and mostly they've been quite fine. I'd rarely meet up for a date (not that I bother these days, dates are too expensive LOL ) but I wouldn't meet anyone for that I hadn't chatted to several times & got to know more about over the phone.
The net isn't really that different to "real life", you can meet just as big a liar down your local bar as you can over the net, so it's a case of judgement. Until you get bitten you perhaps don't get so wise about things.
Having a chat friend is another thing, if you've no likelihood or intention of meeting them it's not quite so important, but never give out too much private information!!