Interesting... my corporate firewall flags your site with an adult-and-pornography filter. Did you recently purchase the domain from someone who may have been running a different type of site? :)
Yeah, that's so weird! We've heard that from a few people. We're currently looking into it. Neither of us can find any history of the domain being used for anything adult or porn related. So strange.
The domainauctionhouse page had a link to domains for sale, which had an Adult section. Maybe the links to domains with bad words in them caused it to end up on filters.