Have you ever heard of wiki ? One of the most well known, and the original I believe, is Ward's Wiki but there are many clones in Java, PHP and other languages.
Anyway, I introduced UseModWiki in my company in November to entice everyone to share information. It's a nice, simple wiki. It took about 2 months before before started getting the hang of it and see how it helped us. What does it buy you ? Essentially this
every page in the system is identified by a WikiName which is a bunch of letters with at least 2 capitals
every user can change every page, at will
there is a diff log for every page
every page contains some sort of very simple layout mechanism (or html for newer wikis) such as using asterisk for bulleted lists or hyphens to draw lines, etc
It's kind of weird when you start using it. It seems unatural to allow anyone and everyone to change every page but it's really a wonderful tool to publish information on your intranet !
This afternoon I installed twiki, from http://www.twiki.org This is the ultimate wiki. It allows you attach files to pages, to categorize pages using a FORM automagically and easily, the search function is great too. For example, in no time I had categorized all the use-cases for a project I am leading and built a simple request to report the state of all use-cases on a single page ! And I've only just started looking at what it can do.
It's got lots of plugins such as
doodle drawing
smilies
spreadsheet for tables you build in your page
to do sheet
lots of others...
Check it out...