This ought to be an interesting thread to watch.
Thanks for the great post Tom!
I don't have much to add to this thread except that XOOPS needs a complete overhaul in the SEO department. The only way I was ever able to do well in search engines with XOOPS was to do a lot of custom coding in the theme and some core hacks to add nofollow.
I hope developers will sit up and take notice of threads like this because poor SEO is one of the big components in why XOOPS is getting smoked by less capable systems like Wordpress.
Stupidity is not a crime. Therefore, you are free to go.