I have to admit that I wasn't really thinking of links or urls, but of objects or items of content.
And don't worry, I certainly didn't mean to imply that that's the only way to do it. In fact, I was mainly responding to a couple of the later messages that described using the bookmarks module. OTOH, remember that almost anything in OpenACS is, in effect, a URL, since that's how you access it (via the Web). So bookmarks could make sense in a way.
OTGH (we'll see how many Niven/Pournelle fans we've got here) ... the requirements don't map precisely onto bookmarks. Perhaps a totally separate module, with some similarities to bookmarks, better hooks to the CR, etc., is needed. I see a itch that someone might scratch here...*grin*
