Matt, your site is crawling :( Perhaps you're getting to many HITs :)
On a different note, I'd prefer it if Twitter names weren't mixed in with domains in the default view - perhaps it's just me, but my first priority when browsing domainpigeon is finding domains. The fact the site can be incredibly slow makes this worse, as switching to 'domains only' can be painful.
How many people trust their credit card information to a site with slow response times.
Finally I would say that your response to the slow site was rather disconcerting as well. You seem optimistic, like it's no big deal-- When users are having trouble using your product you need to sound concerned and proactive, not lazy and optimistic.
It is a big deal--half the posts in this thread are about how slow the site is. Even now when I load the home page it occasionally says page not found. I'm losing visitors and missing out on potential customers.
99% of the time Dreamhost is fantastic as the site doesn't receive enough traffic to be a problem. Unfortunately, its the 1% that's the most important and we're seeing the results of that right now.
Provided that you do something about the problem before your users become irritated at the response times...