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Take it on a site by site basis. Most of these sites have nofollowed all self-created links because of spammers and people trying to use the platform for link building. Shoot, I just did that on my own site

I completely agree with Linda about exposure and referral traffic. If it's a targeted audience, you can definitely drive a lot of traffic from these sorts of sites. I've seen some sites where if you get mentioned, it can literally drive thousands of visits per month to your site.

Hi there. Good question and one that comes up a lot.

You need to do the following:

• Put the noindex on those pages
• Remove the block in robots.txt
• Monitor these pages falling out of the index
• Once they are all out, then put the block back in place

You both want them to a) drop out and b) then not be crawled, so the above will take care of that for you.

Hope that helps!

John