I’ve mentioned before the trouble I had using PurpleSlurple within this blog…turns out that it doesn’t work well for dynamic pages…the anchors will move if you edit a document. Here’s more (via a comment by Chris Dent on one of Common Crafts posts:
"PurpleSlurple takes andexisting web page and runs it through a proxy to add purple numbers to the headers, paragraphs and list items in the page. It works great for static pages. Matthew Schneider, the author did some excellent work.
Where PurpleSlurple does not work is with pages that may change, such as wikis and blog postings. Purple Numbers, in their ideal implementation, don’t leave their original paragraph even if that paragraph moves on the page, between pages or even between servers. In PurpleSlurple, the numbers move around as new content is added to the beginning or middle of the content.
Some, but not all, of the ideal functionality has been present in PurpleWiki: http://purplewiki.blueoxen.net/"
Sounds good…I wonder when Purple Numbers will be available to use, as I find this type of tool very handy in directing people precisely to the location of where the information lives.