This is how I'd like various web apps to work.

Common

• Should support OpenId.

Wiki

• The URLs to the pages would be constructed in accordance with DesigningURLs. Each page would be assigned a serial number. This number would never change. There would be no renaming of URLs.
• It should be possible to edit the raw HTML.

Bookmarking

• When a new URL is added, the default title should be the title found in the markup (<title> element in HTML)
• Clicking on a link should open it in a new tab