Rosalind - 10:23 pm on Nov 22, 2004 (gmt 0)

This sounds a little misinformed, based on the fact that some SE's will stumble on long query strings in urls. A good CMS does not have to be bad for SEO, and should probably have no effect on it. What can be bad is an address that looks like this:

[example.com...]

It's the & that can cause pages not to be spidered, but even that is not a given. This url should not cause problems:

[example.com...]

With Apache's mod_rewrite it's possible to eliminate this problem altogether. Failing that you could look out for a CMS that creates simpler urls.