If you posted in your LJ that you had cool photos from an event I'd been at, and I went to your site to discover you had a cool photo of me there, I wouldn't expect to have to email you to ask permission to link to it from my LJ. I'd post something like "Cool photo of me here [linked] courtesy of ciphergoth". Are you saying you find it rude for people to do this? Or talking about something entirely different?

If you're saying that you'd find it rude for me to tell my friends that you had a cool photo of me, and instead expect me to download the picture and put it on my own web site, I'd find that really odd. Especially as all (or the majority) of pictures on my own site are copyright me, whereas a picture taken by you is copyright you. I don't really understand how we can have such different ideas on this.

(Apologies for completely overusing the phrase "cool photo" there, but I thought it was easier to stick to one expression than keep changing it.)