I have a main site, http://hollywoodnose.com and http://forum.hollywoodnose.com. What I was doing was showing the 8 most recent forum posts in the right column of http://hollywoodnose.com. In my Google Webmasters account for the forum subdomain it shows 300+ incoming links fromt the main domain. Obviously it sees every page as in incoming link. Since then my traffic is literally cut in half. I've removed the recent forum posts fromt the main domain and guess I can only wait now.
This seems really odd to me that this would happen. I still have a link in the nav bar of the main domain to the forum and one in the footer. Will the same thing (duplicate links) happen or will I have to remove these two links or possibly set them to rel="nofollow"? Would that make it seem like spam? How do I handle this situation and has anyone ever dealt with something like this? Thank you.