I find that the majority of my post clipping, retaining posts for later perusal or research, is falling into Bloglines. It's close and convenient to the place where I do a lot of reading. Also, while I'm not taking advanage of it, Bloglines supports folders for your clippings. However, Bloglines clips only services posts in feeds I read.
del.icio.us is the tool of choice for plain old URLs on the web. This means I have two places where I stash Web info I care about. That's one place too many.
WIBNI Bloglines had a posting API for clips? I've concocted the following somewhat Rube Goldbergian solution, but I think it's relatively workable and efficient. I'll start using a tag clipz for URLs I want to stash. Then in Bloglines I'll subscribe to the clipz tag feed.From there it's one click to clip it. A potential benefit is that I actually have to review the tagged URL before clipping it.
The more interesting point is that I'm using tags to drive downstream processing. Of course it's me doing the processing, but the communication could later be with an autonomous process working on my behalf.