Marketing_Guy - 2:33 pm on Aug 1, 2012 (gmt 0)
Agree in principle, but I think there are too many exceptions to the rule for search engines to factor it in.
Popular posts widget that updates regularly = constantly changing links on a page.
Any recent items news feed = constantly changing links.
Job listings being removed / expiring (or events listings) = constantly changing links.
Article, post or whatever being edited after the fact (more info, change in circumstance, etc happens regularly) = changing links.
Also, forum posts, blog posts etc are all pieces of content that are naturally extended over time with comments and replies - most of which contain new links (profile URLs, sigs, etc).
How many new *pages* discovered on WebmasterWorld will have new links due to replies the next time they are crawled?