I agree with Elysium3006 about the IP.

In any case I tell people the city I live in yes, sometimes even the area or subway station, if count that some people don't even know how I look it doesn't really metter. Usually just a city or an area is good enough of an answer for people I talked to... Well I don't ever really tell my adress, apt. or anything like that, and I see that it would be kind of strange if someone online wants to know that... maybe a phone number if I talked to the person enough and I am interested. Otherwise I find it pointless to give out the phone number and waist my time even once talking to the person on the phone. There are strange people out there for sure, but for the most part I see no danger.
In any case, I talk online a lot, dated some people from the Internet faced some not interesting or not the most polite people, but nothing worse...