Yes you can use that tool to disavow the entire domain itself by entering the root domain.

I guess your link or comment should have been posted or moved to the blog roll of the other site which causes you to have so many back links since the site has so many pages.

Thanks,
Murthy

After a webmaster has gone through the usual routes of trying to get links removed off sites they see as being low-quality, whether it was from poor SEO decisions or a bad SEO company, then that is when you would use the disavow tool, to disavow the links you haven't been able to get removed.

If you are at all worried about someone trying to do negative SEO or it looks like there's some weird bot that's building up a bunch of links to your site and you have no idea where it came from, that's the perfect time to use disavow as well. So go ahead and use Disavow Tool

Have you bothered to look at the site and look at the links?

Most of the time this is from blog commenting.

I know first hand that a link to your site from a link in a Vbulletin style footer will create tens of thousands of inbound links - even if from a relevant site I dont think its what you want. THere are other ways if the forum is relevant.

yes you can use Disavow tool for your site.and then index few links about your site or keyword in the google.

Silly thread.

It's most likely a sidebar showing the latest comments on the site, 10 days later you have 100s of reindexed pages with a bunch of links.

Some of you guys are trigger happy on the disavow.