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When I go to search overview I can see my on page optimization grades, but when I try to use the on page grade optimizer for different keywords and url's I get the error. "The URL you entered does not appear to be returning a page successfully. Please make sure that you've entered the URL of valid, working page." However, I know it is a valid url and I get the error even if I use the same url and same keyword I can see the grade for from the search overview. Also, if I try to regrade the page nothing happens and where my previous grade and analysis was located I now have nothing.

Any information about why this is happening? Thanks for the help.

I used the disavow tool to take some negative backlinks off a client's site. It was pretty easy just follow the Guidelines set by google to the letter. The client was very pissed and talking lawsuit and suing, but that is not something that I have any experience with. Apparently, it is a big deal and a federal crime because they talked to the FBI and the Feds actually listened.

Once the disavow request is approved the links are still on your backlink report, but appear with a "no follow" tag next to them. There may have been no correlation because I was doing several SEO related things for them, but the rankings did jump right after the request was approved.

It would seem like you are creating a giant web of backlinks that you really have no control over. Especially, if they are pushed down the post by other comments and if they are short lived what is the point because they do not generate any traffic to your site? What happens if one of the sites you are building the links to, in order to increase your own backlink value, suddenly goes spammy or something happens and they are penalized? If these sites let you build links easily without using a "no follow" then they let everybody and could eventually attract unwanted attention that might result in a penalty. How soon Google figures this out is based on your total link profile and whether the links are to sites that are relevant to yours.

I agree with T & R above and this type of tactic seems like something Google would catch on to eventually, if it has not already. It is my understanding that the Google/Bing search bots can differentiate between high quality links and links from forums and other low quality sites. If so, the secondary links you are trying to build are not being given as much value as you might think. Time spent pursuing ways to skirt the algorithm is time wasted that could have been spent developing the other high ranking backlinks.

I think this would be the same as adding the same backlink twice to a site. If so, Google will only give credit for one. I just noticed I am answering a question from 2011, but got here trying to answer a question of my own about backlinks. Hopefully, Marty has already figured this out, but I am fairly certain I am correct about the link juice passed. It only counts once.