Require Flash Builder 4 for Egit and MecurialEclipse yet?

I just tried install Egit and MecurialEclipse on Flex Builder 3, but looks like it is not compatible with Flex Builder 3.  I guess I'll have to upgrade to Flash Builder 4.
I believe Flex Builder 3 is based on Eclipse 3.2.

CommonTag Ontology Diagram (Semantic Web)

Here is a ontology diagram of CommonTag.