It's come to my attention that new spam filters placed on Friday have caused problems on some blogs with commenting. They apparently have also caused problems posting, because the post I was working on last night kept producing errors when I tried to save it. The process of trial and error led me to figure out that certain ordinary, non-profane words or certain links would trigger the error, which leads me to suspect the new spam filter. (I can't mention the specific words here, because then this post would get eaten too.) In any case, it caused me a great deal of frustration last night, forcing me to change my post and wasting my time. If you have commented and your comment hasn't appeared, please let me know, so that I can forward your complaint to the ScienceBlogs chief techie.