I built one of my sites about 18 months back and after a few months of SEO on it through mostly forum profiles, articles and blog posts managed to crawl my way to a top 10 ranking on a pretty competitive term. Well a few actually for the niche I target, so I was doing ok I also had a forum up which I never linked to on the main site. It was chugging along on the backend for a year until I realised I never asked to have it removed. This forum was hammered by Xrummer blasts. Im talking over 200 000 posts and god knows how many profiles. So I asked my developer to have it removed, he forgot to use a redirect and I was smashed with crawl errors and my rankings plummeted. Put the redirects in and was back to front page within 6 weeks. Now I have been monitoring webmaster tools and my site currently has over 250k links to it of which I created no more than 5k. The rest were links the xrummer blasters built to index their links I think Now 99.999999999999% are not going to be relevant, but they have helped my page rank. Its also made me realise that there is no such thing as a sandbox So I guess the question is, what if I did this again? It seems like a great way to get tons of links to your site using all sorts of various anchors which will help with page rank, but also make your real anchor text blasts seem minor in comparison?