Why I don't use Blogger's on-page comment form

In my experience, if you're not logged in - and for whatever reason, no matter how recently you may have done so, on Blogger even, when you go to another blog, you never are - you have to hit "Post comment" and be told it didn't go through (you're logged in now), then hit "Post comment" again for it to go through.

So annoying.

(Note: I always use my Google/Blogger account, not anything else, not least of the reasons why being I don't have much of anything else.)