Yes, we are using Yahoo! hosting temporarily. Because it is a joint venture, completely separate from GlobalWebBrands, we decided to go with a "neutral" host.
Just as a little inside info (

), we are looking into a partnership with Submitnet that we may be implementing
very soon here. This would give access to much greater tools, and would allow hosts to go about
SEO in a "do-it-yourself" manner. This would also be even less expensive than the current setup. We'll keep everyone posted, so if and when this becomes a reality, you'll see it in this thread!
Glad to hear you like it and think it's a good idea - we are hoping to be able to really help many Web hosts, especially the smaller ones.