I think Google already caches a few blogs here and there. I made an entry about two years ago about PC-Cillin causing massive, pustulent hemmorages in Win2k and somehow to this day I get comments there from random surfers who need help with their PC-Cillin/2k crisis. Now that I've got my LiveJournal embedded into my website, I think this'll happen to me with increasing frequency. Google has cached my site several times already, according to Summary.

And the only thing I use bookmarking for is to keep a list of URLs that I'm too lazy to write down.