I think it would be handy to have user homepages for PM in the same style as other articles – instead of HTML, use LaTeX, for example. But also supply some additional productivity tools. This would make it easier for people to use PM the way alozano does, which I think would be a good thing.
I'm also noticing an interesting phenomenon of "labeling" or "categorization" taking place on the web; many blogs seem to have this feature, the idea being that pages or postings can belong to several user-supplied categories. Perhaps a feature like this could be worked into the PM homepages.
If there is some (not necessarily full) standardization in this user-supplied metadata, then these categorizations could be aggregated to give other users access to useful global information.
More thoughts from other (and more hardcore) PM users about features they would like to see in such homepages would be valuable.
--jcorneli