There seems to be a new trend with internet marketers running some kind of mentorship or bonus program.
It runs something like this (though I haven't signed up to one to get exact details)
- You sign up to the mentorship program
- One of the tasks is backlink building from Dofollow blogs
- The new internet marketer runs around leaving comments on Dofollow blogs, but uses backlinks to the blog or salespage of the internet marketing guru
- After dropping a certain number of backlinks, the new internet marketer qualifies for a bonus
The backlinks are sometimes the link reserved for the comment author, or sometimes product mentions



Why You Should Nofollow Your Blog Comments?
- You get increased automated comment spam
- You get increased spam from outsourced commenting
- You get increased spam from people using commenting efficiency tools (Comment Kahuna, Comment Hut etc)
- You get increased spam from people using dofollow search engines
- You get increased spam from people using lists of dofollow blogs
- You get Internet Marketing Gurus encouraging their interns to comment on their behalf
It takes additional time to manage comments on your blog even when you set up Spam Karma effectively, but that is something you could outsource to compensate, or have managed by a more junior member of staff. You also leak a little bit of extra juice, how much depends on your site structure, and how many comments you get. Some people prefer to have huge blogrolls of the people who buy them drinks at seminars.What Do You Gain?
I think the biggest gain is in community