Monitoring is a good idea. However, pixel-based comparison services are quite pointless for web pages. Banners, dynamic content etc. simply drives spam. Try Br

Monitoring is a good idea. However, pixel-based comparison services are quite pointless for web pages. Banners, dynamic content etc. simply drives spam. Try Browserbite with its feature-based comparison. There are other regression-oriented tools out there as well that use pixel-based methods as well.