Hmm, thought maybe you were buying me a hover craft in the shape of a mouse,

) <-- Smiling Pig Icon, Patent Pending
Ok, I have seen the results of your work and it's nice where when you hover you get the words. It has also made it nice because I just used an acronym and it didn't come out underlined, so I know it needs to be added.
DMA = Designated Market Area (used Nielsen Media Research (television) and Arbitron (radio))
TMA = Television Market Area (used by the FCC)
READS = RabbitEars Area Designation System (used by RabbitEars.info)
Actually I was suggesting either. Now my experience I only find about half the stuff in wikipedia when it gets esoteric on any subject. The commons ones are there at Wikipedia.
So I thought of two separate options. One is you make wiki section on this site (lot of work probably).
The other would be to just link to Wikipedia and from a separate glossary page would be good. The separate glossary page could have a one sentence explanation then a link to Wikipedia if there is a lot more information.
Both options have their merits. A wiki on this site should up your google ratings and exposure, but might be more work, no one has time to do.
The option of pointing to Wikipedia saves a lot of time, from a page that has one sentence explanations. Then if something is not covered at Wikipedia, a new page created there. If you have something here that is significant about the subject, you would do an external link pointing here (probably not that often being a forum).