I plan to completely rewrite my company's website (currently PHP) in a CMFPlone solution. The pros are completely obvious, yet I have a few questions so that I can do it the Right Way(tm).

We have a 30,000+ user Postgres database. I feel it is not a sensible solution to store this in the ZODB, and I'd rather keep it in Postgres and use exUserFolder and ZPopyDA. Am I right, or can I get rid of this complexity ?

Not that I've done it, but I think this is within the theoretical limits of a btree-backed user folder. I always try to use as few external components as possible, and would consider moving everyone to Zope worth at least a little experimentation. However, that is an awfully large existing datasource, which is a very good reason/excuse to just leave it be. The exUserFolder route has worked well everytime I've seen it done. (Even with CMF.) --jcc