There are several indoor-outdoor kitties in this area in addition to my stray: a gray and white cat who's a bigger version of my stray, a very long orange tabby, a black cat, a brown tabby with a very furry face, a brown tabby with a fluffy tail, and most recently a pretty tortie. Every time I see one, I crouch down and greet him/her and stretch my hand out. All of them are friendly - like Carmel said, some are too friendly. A couple always swish around my legs and meow when they see me, hoping for food. I shoo them away though, because Casper has marked on the deck several times - including once into his little dog house, which is why I had to buy a new cat house.
A few times, I've seen a little calico who limps, holding up one of her back legs. I got out of the car one day, and she was across the street. When I said "hi sweetie," she came over. She was a little wary but sniffed my finger, gave me a head butt and let me pet her. Then my stray sort of pounced on her, wanting to play. She went to hiss under my car.