Personal space?

It often depends on the level of relationship, attraction and type of friendship.

Some waitresses, I'd definitely let them kiss me or give me a hug. A few of my old stomping grounds. If I went to some new place and got a hug or kiss, I think I'd be shocked by it.

A girl once whispered into my ear, and since I liked her already, it was quite nice. But if I'm sleeping, and a family member does it, it creeps me out, and I might get pissed.

Some friends I was cool with cuddling. Some so called friends I wouldn't touch with a ten foot pole. I had one platonic girl friend I was cuddling with and she started doing something that actually kind of turned me on a little. I was a little annoyed with her because I still felt like it overstepped the bounds, since we were platonic friends, and I hadn't been turned on by her before, which made me feel weird.

I've gotten a few kisses on the cheek from a female friend; I was fine with it because they were sweet and innocent, there was no intention from either of us, and they were emotional moments. However I'd never cuddle with her. She's married, and I'd feel inappropriate by doing so, even as "innocent cuddling." We hug, but on occasion, and it's nice because it's not out of obligation or awkwardness, but because we love each other as friends. she's like a sister.

As close as we are, we wouldn't cuddle like I did with my other former friend; and yet my former friend and I were never as emotionally close as my current woman friend.

If you spit on your thumb, then stuck your thumb out at me to wipe some dirt off, I'd back the heck away from you, and quickly. That's a mom thing to do when you're a little kid. Not appropriate if your a waitress and I'm a customer.

If the waitress from a bar I frequent were to just rub off some dirt, I might feel a bit embarrassed that I didn't notice and it was so random, , but most are quite cute, and I'm on friendly terms with them, so if she came up, told me I had some dirt, and I couldn't find it, if she rubbed my face with her finger, it'd be appropriate.

Again, if some of those waitresses hugged me, It'd be appropriate (AND WELCOMED!), but if a waitress I'd never met started working there and just did it, it'd be a bit unsettling.

Again, I think its about how the relationship has been established.

If she's my girlfriend or someone I like I let her do whatever she wants =p
If it was a friend I would let her wipe dirt out of my face or pull on my cheek to be funny, but not like just touch my face just for the sake of touching.

Even if a girl didn't mean anything to me romantically, if I'm comfortable with her I'd let her do it.

yea no problem with touching the face but depending on how you do it it could seem like a flirt

I don't know any other guys but that's one hell of an indicator of interest for me. If I chat up a girl and she's trying to touch me, it's game on. It's time to escalate things further.