Reply To: Importing a large vBulletin forum – in stages?
There should be a vBull importer in bbPress.
The W3 Total Cache would help optimize bbPress. Of course it is more important to have high performance hardware on your site, use an opcode cache, possibly an object cache (the plugin helps add a backend file), and keeping your database tidy. Page cache can become a little tricky in some situations but it should be fine using w3 total cache with bbPres.
bbPress is translatable and there are translations for specific langauges.
bbPress could work in multilingual sites. It might be better to just allow your users to contribute their content in their language though. There is an issue using WPML though.
