I'd love to do this! I've been hunting forever, hoping someone has created some monster portfolios to save me the hastle of doing it myself.
We could use my site if you like,
www.rpgeek.com.
I have forums and could add one for sharing portfolios. Just join and contact me on the site so I know there is an interest to set it up.
I'm working on inputting all the monsters necessary for a Neverwinter Campaign, using the tables given in the Neverwinter Campaign Setting book. So once that is done I can post it as well for anyone going to run that 4e campaign.