1. You’re website’s been dropped by Google (BMW)
2. You’ve dropped in rankings (GoCompare)
3. A uncomplimentary website is bidding on paid search for your brand name
4. A competitor is bidding on paid search for your brand name
5. A bad news story ranks for your brand name (British Airways)
6. A porn site ranks for your brand name
7. A web page which damages your brand reputation ranks for your brand name (McDonalds)
8. Google crawled your website when it was down (Sainsbury’s)

9. A company with the same, or similar, name ranks for your brand name (British National Party/BNP Paribas)
10. Search engine usage is decreasing (although that’s never gonna happen, right?).