I'd like to suggest a REST-interface to vBulletin to allow external applications access to your forum.
Ideally the following actions can be taken:
retrieve user information / add new user by remote
same goes for anything else
All addons, e.g. Projecttools, should also use this system so it could improve the use of PT dramatically. Blogs could also benefit from the interface as it would be possible to add new blog posts / comments from remote.
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