AFAIK, only if the forum admins blocked the search robots, but then doing so would prevent folks (who are looking for help via Google) from finding forum replies that might be of help... I think that's how I found my way here to PC. It's a real eye opener to Google your member name and see the long list of postings! And the more unique your member name, the easier it is to zoom in on your posts via Google or other search.