If I have photos that I now have on my own computer uploaded to an on-line photo hosting site, and there are some photos there of some providers whom I know well, would a search by any of the photo search outfits find those, or do the photos have to be out on other sites that are accessable to all, like escorts mall sites, for example?

I assume that they are locked up, but I want to be sure before I send any photos to them.

Are these photo hosting sites all about the same, or is one better than the rest?

My hard drive is getting pretty full.

Shit, I have no fuckin' idea.  Sorry mrf.  I have no experience with them, but to post pics here, all that's needed is a URL to link to.  What you might do is upload a very innocent pic of something non -hobby related to something like facebook if you are on there and one to one of the pic sites.  Then tineye it from facebook and see if the other pops up.

Then you would know.

Swim

Let me know how it works, I'm sure everyone could benefit from that knowledge.

Swim

Usually if you create folders and set them to private, the contents do not come up in searches and are not visible to the public.  

Another option is to use an external hard drive or flash drive.  Both are pretty affordable these days.  Some of the flash drives are up to 64 GB and will hold a lot of music, photos, or several movies.