Best way for getting rid of dubious backlinks

[Furious-D]

This post is deleted!

[anthonydnelson]

You can contact the websites and see if they will remove them.

If that doesn't work, you can disavow the linking domains.

[MarieHaynes]

m.biz links pretty widely across the web.  I think that Google probably ignores these links. However, no one knows that for sure.  So, I usually recommend disavowing them just to be safe.

Here's more: http://searchenginewatch.com/article/2364322/Whats-the-Deal-With-Links-From-M.Biz-Should-You-Disavow

[Essential-Pest]

You can try to contact the website owner to see if they will remove those links. However, spam websites will never do so. What you can do is disavow the links, not just the domain. Finding the exact links you're listed on and disavowing those is the proper way to clear those links.

Also, using Google Webmaster tools is a great way to find out if you have been penalized for something in regards to your website.