No, no one asked these question yet, but here are the answers anyway
Q: Why is it called ScavengerEXA ?
A: As it is a carnivore 1)
A: which eats your network Junk 2)
A: And as it was developed by Exa Networks Limited 3)
Q: What are the dependencies for this program
A: Python, tested with version 2.5.2 4)
A: Twisted Matrix, event-driven networking engine 5)
A: the packet capture library (pcap) 6)
A: the dump packet module (dpkt)7)
A: optional for policy, MySQL 8) with the python MySQLdb modules 9)
A: optional for policy, PosgreSQL 10) with the pg8000 module 11)
A: optional for action-netfilter, python netfilter 12)
A: optional djb daemontools 13)
Q: What database can I use for the policy server ?
A: You should NOT use sqlite3 as production database at this moment in time
A: but it can be used to evaluate the software
A: The policy server uses the Python Database API Specification v2.0 14)
A: so it should trivial to port it to any DB with a DB-API2 interface.
A: sqlite3 and MySQL have been tested, postgresql should just work
A: If you are going to use MySQL you may want to read this article 15)
A: If you are planning on testing postgresql look at this module 16)
Q: What OS is this designed to run on ?
A: The main development is done under Linux (both Redhat and Ubuntu)
A: We have no idea if this runs correctly on other Unix flavors.
Q: What licence is the code released under ?
A: This code is released under the affero GPL licence v 3.0 17).
A: Please note that this is the 3.0 only and not any later version (no-one has checked possible license incompatibility issues yet).
Q: Who holds the copyright for the code ?
A: Thomas Mangin wrote most of the code whilst working for Exa Networks Ltd.18)
A: His collegue David Farrar provided a large amount of help not necessarily correctly expressed in the copyright note added later.
Q: Can I contribute ?
A: Sure, send us patches or ideas.
A: We may need you to send a signed copyright transfer, but as no-one has done it yet we have not decided.