As further proof of my laggardnesses, only recently (i.e. today) did I make the switch to del.icio.us, the social bookmarking site that all the cool kids are using. My previous solution to this problem was a "To-do" folder in my bookmark toolbar, to which I would add items and (much more rarely) visit and/or delete them. del.icio.us may not change that behavioral pattern, but at least now I can ignore my "oh, this is interesting" links while safely knowing that they are all tagged and ready for searching at some later date. And to be safe, it all gets backed up nightly.
Given my recent progress, expect me to use Flickr in about six months.