I had to fiddle with it a bit, but Disqus works fine. I've switched my name to trivialknot. I prefer that commenters refer to me by that name, just for consistency's sake.
There's no particular rationale behind the name "trivialknot". I just tend to think of mathematical concepts when I'm searching for names. A trivial knot is a loop that can be smoothly transformed into a circle without ever crossing itself. In other words, it is a loop without a knot. This name has been kicking around for a few years.