There's some interesting sites out there

We've been watching sites go through the crawler and the first, most immediate issue is that our crawler isn't coping with malformed HTML as well as it might. There's a fix on the way and the crawler should be able to handle those issues shortly. We'll re-crawl and notify those users that had that problem.

Unclosed tags and so on are commonplace and we had a basic HTML validator on the "to do" list but I think we'll do it sooner rather than later.

If your site crawls but shows 0 or 1 page crawled it's either because you've got major issues with your HTML or none of the URLs on the site are the same as as the initial URL - eg: if you tell crawlscore that your URL is http://google.co.uk but your links are actually http://www.google.co.uk then crawlscore will treat them as external URLs.

There's an argument either way for following sub-domain URLs but for the moment, we're treating each site individually.

To crawl a subdomain simply add it as a site and it will be crawled independently.

As far as we know, most search engines treat subdomain differently anyway so we'll do the same :)

We're trying to communicate directly with users where possible to let them know of issues (either their end or ours) but we're getting a high number of sign-ups so please bear with us.