Links

Serious ones:

eXist: Opensource XML database
Openarchives Initiative: E-publication initialive specifying a protocal for metadata exchange (OAI-PMH).
GNU eprints: Software that allows creation and management of an OAI compliant archive.
Warburg Electronic Library
Common Errors in English: Colleciton of useful hints about usage of the English language
Comments are more important than code: An essay by Jef Raskin.

And not so serious ones: