Leave a comment on this post about anything you want to talk about. Though I haven't been doing too well on this, I'll try to remember to always have an Open Thread showing in the Recent Posts section in the right sidebar. If one isn't showing, I've added an Open Threads category in, naturally, the Categories section. You can always find an Open Thread that way.
So if you're a believer in some form of religion, mysticism, or spirituality, this is where you can put your "praise God," "praise Guru," or "praise _______" comments.
And if you want to use this blog's comments as a form of message board, where you have back-and-forth comment conversations on a topic unrelated to a blog post, please do this in an Open Thread. Visitors to this blog expect comments to be related to a post. If you want to talk about weight training (a recent example), or whatever, do it in an Open Thread.