obsolete hardware database

i see once again on the forum desperate users are chasing around for obsolete parts to maintain existing older systems. We are a Parker distributor and Iqan specialist ourselves and as such have quite a lot of obsolete and/or older hardware on the shelf we no longer specify for our new applications- I imagine there are many others in a similar position with kit lying unused that other users need urgently. How about a forum based database or similar where holders of kit they don't need can upload details, to indicate their unwanted stockholding and potential buyers could offer against?