In reviewing our logs I found that googlebot spidered our .CSS file on 10/18/05, coincidental? No spidering of this file in the last 2 months. But this just reinforces Matts quotes, no surprise, they are reviewing style sheets.

Our CSS file doe not have any spam techniques, however we were hit hard by Jagger update. We are "dancing" around and I think the update is not over yet. Too many fluctuations are the main indication.

greeneagle, I agree on the hidden text part, but you went too far with the font size in titles. All of us agree on what a spam practice is. The only changes I see here is the way google is detecting it. How do you detect a hidden text where you have as a background an image the same color as the text itself? Well, they might be smart enough to go to the image content itself and detect its most predominant color, an hueristic approach tough.