It seems that LaTeX/MathJax is working fine with my blog, including with mobile devices, which is great (see, for example, my recent post On the Wastefulness of (Pseudo-) Out-of-Sample Predictive Model Comparisons). However, a problem exists for those with email delivery, who just get raw LaTeX dumped into the email. If that happens to you, simply click on the blog post title in the email. Then you'll be taken to the actual blog, and it should render well.
Please let me know of any other problems!