Comments have shot up in frequency lately, which is great.
FYI, I have the comments set to "Moderated," which means that I get an email that comments were left and I have to approve them before they appear. This isn't for purposes of censoring per se or sifting on quality... I'm just avoiding spam. The first several months of the blog I had the comments unmoderated and there were a lot of penis pill ads and other nonsense getting through.
When you leave a comment, therefore, there might be a lag of a day or so in when it appears. I try to deal with these fairly quickly.