My pet random thought is how to integrate the functions of a blog, a TWiki and the zIWeThey software.[1] They have different purposes, but can complement each other. Imagine if you will ... Each user can use the BLOG for their journal. Responses use the forum software. Knowledgebase-type stuff can use the TWiki. Everything uses common notation for markup.
[1] Damn, Scott ... name it something already. ;)