Mart Muller (one of my favourite Sharepoint bloggers) has build a project called WikiSharePoint, a nice set of SharePoint web parts which make it possible to create a Wikipedia-like application in SharePoint Portal Server or Windows SharePoint Services.
Features
WikiSharePoint Beta 1 comes with 3 web parts:
- Tam Tam WikiSharePoint, which creates the list for you if you like and displays the results.
- Automatically create thesaurus
- Finds other terms in the results and makes them clickable
- Tooltips with descriptions
- Shows path and more specific items
- Terms editable form the result page for users with edit rights
- Insert new items from the web part menu
- Search in WikiSharePoint, which is a control that searches the thesaurus.
- Can be used on any area or WSS site, pointing to thesauri on other places as well
- Can be used as search box in SPS
- Tam Tam WikiSharePoint Treeview, which displays the thesaurus in a tree view.
- Displays all items in hierarchical way
- Collapse and expand items
- Edit items by clicking on them
- Add new items from the web part menu
Really interesting if you love the collabourative sites like Wiki. 