I've been trying to come up with new ideas for rants so I could do a poll, but unfortunately my brain seems to run best on prompts at the moment. If you'd like to see a particular rant, go ahead and suggest it here, and it'll probably make it into the poll. (Feel free to second/third/etc. someone else's idea that you like).
I may not do rants just because I don't feel I have enough knowledge in the area. I may also not do them because I've covered the subject before. If you want to know whether it's been ranted about, here's the list of all of them.