The limitation of rapisshare is that it ID's you, no doubt based on IP and then limits the number of simulatenous downloads you can have at any one time/number per month on a free account.
Solution, fool it into thinking its not you donwloading the different files by using a proxy server to view the site and download them.
The drawback is that
a) I can't think of (or be arsed to find) any software that does this automagically.
b) You still have a bottleneck on the download as its coming from one location to your location (albeit through a proxy).
Torrents are good, providing there are enough seeders, I'd imagine that (based simply on the films listed at the site you link) that some of the films aren't going to be that popular and therefore when they do appear on torrent trackers there won't be many people seeding them, so you're kind of in a catch 22 situation.
One more thing I can't envisage that site hanging around for long either, its a blog hosted by blogger (i.e. Google) and they'll likely remove it soon after getting wind that they're hosting it. Dan (I think, the guy who made "Some Climbers" and the other one on gritstone headpointing who's name eludes me at present) had a similar blog linking to tons of climbing films hosted on rapisshare and similar sites. Meant to get some, but went back a week or so later and the site had gone.