Looking through some of the questions and answers already on the site there are a few questions where the answers given are simply short 1-line answers based on the answer-ers experience. This is possibly best demonstrated here, where the answers don't cover more than one service, and is simply a list of what people currently use - rather than a (more) comprehensive answer covering possibly multiple services and advantages and disadvantages.
Now it appears to me that a more comprehensive answer would be better for a question such as the one I linked to above - but I guess what I'm asking is: "Are these short answers based solely on users experiences what the WA site is looking for/acceptable?"
As an additional note, the FAQ doesn't actually include any information about what sort of answers are useful and is something that possibly needs 'nailing down'