I'm glad that everyone doesn't share your opinion, or my income for the year would be lower.
I have had one good sale of a RFID name, (RFIDEA_com), a few months back, to an engineereing firm out of Belgium, I believe. I have also received offers for RFIDMeter.com and RFIDVending.com, which I declined.
There are 41 million Google links to the term, RFID. When I started following RFID and RFID domains about 1 1/2 years ago, the # of searches were right around 200/da. Today RFID is searched, approximately, 1,000 times/da on Overture which translates into roughly 300,000 searches/month on all search engines. (1,000X30X10.) That number will, surely, continue to grow, as the term gains increased exposure and RFID technology continues it's infiltration into nearly all aspects of the social/commercial infrastructure.
My own initial success w/ sales and the link and search figures do not, necessarily, translate into all RFID domains being commercially successful. But, from where I sit, and from the indicators I have seen, I won't be dropping any of my RFID domain names in the forseeable future.