My Haloscan-era comment policy was one of reserving the right to delete and edit comments and to ban commenters in a purely capricious manner.
This remains intact, though I don't actually seem to be able to edit comments or ban commenters with Blogger.
This part is new: I reserve the right to refer to any anonymous commenter as "Mr. Bimbim," and to treat their comments as though they were the playful antics of a fluffy wuffy cutie patootie doggy woggy. My intent is to irritate anonymous commenters into using the "Name/URL" option -- and, obviously, to entertain myself.