I'm wishing for a toolkit/plugin that:
* creates floating/draggable iframes within the context of a blog entry (think of an intermediary window that provides extra info, perhaps links to follow, sort of Wiki-like, but not involving popup/external browser windows)
* stores the data for a sub-post within a hidden DIV in a blog entry
See my longer writeup at IFrame Sub-Posts?
The overall idea is to have a mechanism for easily making "for more info..." windows within the existing browser page (you could also think of "tooltips++"). Something that is used sparingly.
quick last note: I advocate storing the "sub-post" material within a hidden DIV within a blog entry. This has an obvious drawback of tying the sub-post to one entry. The next logical iteration is to decouple them, but I suspect that has somewhat involved architectural implications.