I've just figured out how to export images from Capture One directly to a Nextgen gallery on my Wordpress web site.
It was originally intended to keep it to myself but if there's an interest I'd be comfortable blogging about how and why; it's relatively simple to do and understanding how it's done is quite useful.
In principle, although I haven't done so yet, it should be possible adapt it to export directly to a Wordpress media library. Or, in fact, anything that support xmlrpc - I believe SmugMug is one such.
In the process I've also had some fun messing with recipes' Open With feature; adding borders, posting to Twitter and whatnot. And using keywords and smart folders to track exports. Same applies; if there's interest I'll blog about it.