Not sure what's been going on, but I haven't been able to log in to the sieve reservation site for a while. I've been getting a link through a combination of the sieving help thread, OmbooHankVolds help site and the SOB Wiki. Some of those may have the correct link, but my semi-random clicking hasn't managed to get me to the reservation site.

I haven't tried in a few days, so if it's fixed, sorry.

Edit: As of now, the link in the Sticky still doesn't seem to want to resolve.