Welcome to WebmasterWorld Guest from 18.104.22.168
Initially, we had some success and a large percentage of the site was indexed, resulting in some decent traffic. However, just recently nearly all of the pages have become 'supplemental results', and naturally, traffic has taken a hit.
We're trying to establish what the problem is, but not having a great deal of luck. The only potential cause that I can think of is the recent addition of some affiliate links; could this result in being hit so heavily by the search engines?
I'd appreciate your thoughts.
I would strongly suggest that a 1 Million page parts site is looking pretty spammy to Google right now... unless you have tons of google 'respect'.
best of luck.