jonnno - 5:31 pm on Sep 4, 2008 (gmt 0)

It's hard to know where to start. What we operate is a company directory for a non-it related industry. We do charge for enhanced listings but regardless of whether people pay or not we still link to their website if they have one, but don't use nofollow because people are not actually paying for links and we want to show relevance to the industry. I can't image we would be linking to any dodgy sites but we're significantly sized and checking all the links would be an issue. We also don't pay for incoming links so the problem shouldn't be upstream.

This happened to another website we operate a few years ago and if memory serves, after a few weeks it all just went back to normal. Is there any reason that this would happen?

Thanks again