The resounding admonition from the comments on the "post length" and "post frequency" questions was: "longer and more frequent would be nice, but don't sacrifice quality for quantity."
A lot of people commented that they didn't think it mattered one way or the other, so I think these results are wrongly skewed in favor of more credibility.
I was expecting less men than this, but it's good to know guys are reading too.
Thanks to everyone who took the time to complete the survey. The results were mostly unsurprising but I got a lot of good ideas from the comments you wrote in below each question, and will be incorporating some of them in the future.