I just suddendly find out that, google webmaster tools show that my top keyword is nothing related to my site, and I have also checked the source code of the pages allegedly contain the keyword, not a single keyword is found! This is so weird! and moreover, I also find many keywords in other language such as Japanese appeared in my keywords list. I am suspecting that, maybe the flash games I collected from the internet run some malicious codes on my site? but I cannot find the clues even when I use "fetch as googlebot" to scutinize the returned page souce! Help me!
If it's a new website (new to you) then you may find the domain was used previously and dropped, in which case google will show the old data for a while. If this isn't the case, then... ? I would suggest you ask on the google webmaster tools support forum though, you may well get a better answer there
Same to me . It show my keywords appear more in "google translate" . I wonder how this happen ? Or it may appear in this result in some country google?