They do have a good chunk of BTC in a very short amount of time without the extra 100, but they also moved the donation link up.  It's interesting to look over the sites in the wiki that accept bitcoin donations, and their publicly available donation amounts.  Placement of the donation option does seem to have an impact on the amounts received.  Either way I think it would be good to point out in any Bitcoin100 comunications that placement of the button or address is important.  I'm really in the middle on archive.org.