Hi hey both Cyanide and obu have experience with Xoops ... it's the content system I use on my site (MSTBIE). I can say this about it ... it is very customizable but not as well developed as Mambo and can be buggy at times ... Cyanide knows this first hand :-) The pages are very search engine friendly ... it's based on one template theme but they have just developed a new module that allows you to create individual pages per section/module therefore allowing different title tags etc.

We are building out some other sites with Mambo not because we dislike Xoops but Mambo has some different modules that will work better with what we are trying to accomplish.

Both are good systems IMO and both have good support so I guess it depends on what your looking to add into your CMS.

MM