The main intent of the search is to retrieve a list of urls that the site crawled for a given subdomain, domain or tld. So for now you can do that using reversed url notation. Which I admit is not very intuitive.

We're toying with the idea of implementing some sort of wild card that way we can present the urls in natural order. Something like *.google.com to retrieve all urls under google. But we wanted to judge the level of interest first. After all "done" is better than "perfect".

Just an oversight. Most of our work is done by people who graciously volunteer their time. We'll get that fixed.