CONFLUENCE - the wiki you're using now
General Info -
http://www.atlassian.com/confluence
CRBS Confluence Wiki -
http://confluence.crbs.ucsd.edu
Confluence Features -
http://www.atlassian.com/software/confluence/features
Confluence Solutions -
http://www.atlassian.com/software/confluence/solutions
Confluence Plugins -
http://www.atlassian.com/software/confluence/plugins
Confluence Screenshots -
http://www.atlassian.com/software/confluence/screenshots
Editing Hints -
https://confluence.crbs.ucsd.edu/renderer/notationhelp.action