I've been having the same problem with Flickr. I got it to work once but it took way too many steps.
Yeah, me too.
First, get TO the pic, then, change the size, then select "Share" - then select HTML, them, select HTML AGAIN for the code part to copy, then select the http to .jpg PART of that code and copy just it, to paste between img tags.
VS
Right click pick scrolling down to resolution and selecting the address to copy, and pasting that between img tags.
So, no one knows a quick way to copy/paste Flickr pics anymore?
Are you guys just migrating to photobucket, etc?
Is there a better option?