At Fuseo we have always believed in adding good quality unique non-spammy meta-keywords to every page where possible. You can never be sure which search engines are gathering the data and when they may change their algorithm to incorporate the meta-keywords.

SearchEngineLand recently published an article about how Yahoo has quietly dropped the use of meta-keywords but as a test they placed a string of non-sensicle characters (xcvteuflsowkldlslkslklsk) in the meta-keyword field. 2 days ago they searched for the string again and the page appeared in the Yahoo results even though the string of letters is nowhere in the copy.

It remains to be seen what will happen if the Bing/Yahoo deal is finalised as Bing does not support the keywords meta-tag either.