In re-reading my post, I am reminded of one other (quite legitimate) objection to UUIDs as identfiers. When embedded within an HTTP proxy, we get the dreaded wrapping on certain email forums; to wit: ============================================== urn:lsid:zoobank.org:act:8BDC0735-FEA4-4298-83FA-D04F67C3FBEC (just because) http://zoobank.org/urn:lsid:zoobank.org:act:8BDC0735-FEA4-4298-83FA-D04F67C3 FBEC (Human readable) http://purl.zoobank.org/urn:lsid:zoobank.org:act:8BDC0735-FEA4-4298-83FA-D04 F67C3FBEC (to make Roger happy) http://zoobank.org/authority/?lsid=urn:lsid:zoobank.org:act:8BDC0735-FEA4-42 98-83FA-D04F67C3FBEC (to make supporters of LSIDs happy) http://zoobank.org/8BDC0735-FEA4-4298-83FA-D04F67C3FBEC (to make me happy) http://uuid.tdwg.org/8BDC0735-FEA4-4298-83FA-D04F67C3FBEC (to make Dave Vieglias happy) http://lsid.tdwg.org/urn:lsid:zoobank.org:act:8BDC0735-FEA4-4298-83FA-D04F67 C3FBEC (to make Lee Belbin happy) http://cache.gbif.org/?uuid=8BDC0735-FEA4-4298-83FA-D04F67C3FBEC (to make Tim happy) ...and so on, and so on, and so on. ============================================== Ouch. Oh, well....perhaps we need a tinyurl service to allow us to embed example UUID resolvers within force-wrapped email-message forums. Aloha, RIch