Getting this set up to try it out has been an exercise in frustration, even with Google's translations. Permissions and access control need to be documented. I've yet to figure out how to add to a vocabulary.

In list terms displayed in search show term details with pop up or fly layer

Add simple schema (title,type relation, url) to create relations between terms and others web resources.

Could you add an option--similar to the DC/MADS/SKOS, etc. links at the bottom of the screen--that would display the knowledge map for a term?

This would be very cool :-)

I am not sure how you would do this, having a brief look at the code--I wish I could speak some Spanish, sorry!--but when I use the import function for Tagged Text (and this works very nicely, thank you)--I would like to be able to submit Notes that overwrite exsiting notes. In the current version, any notes are added; thus, whenever I want to update a concept, I get duplicate notes.

Using gettext to translate the application.
Gettext is in use in Wordpress by example. It will be very powerfull to add translation and maintain them up to date.

Password are actually stored without hash : if anyone get access to the database it could be dangerous for users. Add random letters or numbers and hash the result (md5 or sha) will secure this point. The password must never be sended with no hash in my mind.