I'm weighing in on this topic late, sorry.
I saw the original post right away and was thinking of how to respond because I really don't like the way RFG uses the term "homebrew."
Editorializing here, I'll try and be brief
As far as how
RFG categorizes things, "homebrew" is not a genre. All the other genres relate to style of gameplay whereas homebrew refers to some weird combination of release date and motive. It is if we were categorizing vehicles using boats, planes, cars, trucks, motorcycles and "made in Germany" which would also include boats, planes, cars, trucks....the two things aren't the same grouping.
I think we could come up with lots of examples were a game was created by people literally
at home, not affiliated with a game studio originally sold in plastic baggies or the like which we do
not call homebrew. There are examples of things we refer to as a homebrew but were created by paid employees of incorporated game companies, with full artwork and packaging. That doesn't make sense.
The best example I could think of is a game that isn't in the DB yet
I'm sure we would call it (wrongly) a homebrew though. Dave Akers, a man who worked on games like Burgertime and Bump 'n Jump recently made a game called Paddle Party for the Intellivision. It was released by a company called Elektronite which is in the business of paying people to make games that they sell for profit. Intellivision itself is a company that is owned by an original employee that actively makes games for sale. How would this be a homebrew? It shouldn't be.
My point is that we shouldn't use homebrew as part of the genre description. It doesn't fit. I don't really like the term at all for use in RFG's DB but if we must use it please make it it's own category. As in it's own line on a game description page.
Since I'm trying to be concise I'll leave out some other points I could make, besides, I'll be surprised if people completely disagree.....I'm trying not to bring up Halo 2600 though (we call it a homebrew, why?)
http://en.wikipedia.org/wiki/Dave_Akershttp://elektronite.com/Games/Paddle_Party.htm