Our crack web designer has taken a common readers’ (and my) suggestion on board, so you now have the ability to edit your comments. You’ll see when you post your comment, though, that a little clock starts running beside it. That means you have FIFTEEN MINUTES to edit your comment before it becomes set in stone.
This allows people to correct spelling or grammar mistakes, or fix infelicities of prose, but not to modify comments in light of later comments. That seems like a fair solution to me.
There will be other changes, all of which, I hope will constitute improvements. Stay tuned.