Very strange ad on one of my sites

Question marks gone wild

[wrgvt]

I've noticed an ad running on my one of my sites the last few days that looks something like the following:

?dvd?cd?
? 200 000
?

The displayed URL has a .ru extension. Are the questions marks due to non-English characters not being displayed properly? I can't say that I'm thrilled to see an an displayed like this on my site. It's a waste of space.

[edit] Webmasterworld must delete multiple questions marks. Each? above is really a string of several question marks.

[signup1]

google has a bug here. most entry level html programmers know how to fix it. i still watching how long it will take a multi billion dollar company to fix an html error.

[Sanenet]

It's because the ad is in Russian. The strings of? are the Cyrillic characters, the words (DVD, 200) you see are the western characters in the ad.

Possibly (I don't know, haven't tested it) it's caused by you not declaring the Charset of your document properly? Try setting it to good old charset=iso-8859-1.