How is a landline number secure? What if they don't have a landline? I'm in a minority of my circle of friends to have a landline, most only have a mobile.
If you're concerned for your safety about meeting up with them, then can you arrange fora friend to pick you up at a certain time (or sooner if he isn't what you thought). If you hit it off with the chap, then you can always arrange to meet up again very soon and you'll maybe feel secure enough to not want to arrange anything?
I can see the guys point, I wouldn't give out my landline, veryfew people know my landline number.