I signed up to a forum many years ago, filled in all my profile details including a link to a page on my website. I assumed this website link was just something that showed up on my profile but it seems that it is attached to every single post I make (it is a forum where if you hover over the username, a drop down list appears with "visit my website" as an option). I've notched up several hundred posts over the years and my Webmaster tools now shows 250 links from this one domain with the next highest domain being 7. Do you think Google may frown upon this in anyway? There is a reason for me asking as this one page on my website has recently plummeted from a very stable #15 to #250 on Google. Happened on 17th Jan when there was all this talk of an update so possibly related to that but the rest of my site seemed to get a boost, all except this one page and the only thing that looks different to all the others is this large percentage of links from one domain. Since the drop to #250, it's now gone up to #170 but still a huge knock for a single page?!