Rearranging Posts

I'm pretty sure I can't currently, but it'd be really awesome if as a GM I could rearrange the order of posts in a thread... Just a thought. Probably ten times harder to implement than it sounds.

Everything is ordered by creation timestamp.

And it pisses me off when the GM alters my posts, so having them rearrange my posts to fit their sense of order, would properly result in me leaving the game.

What possible use is there for such rearrangements?
I've seen a GM add OOC sections to players posts for comments and explanations. Struck me as a bit odd. I think it might've been one of those TK refugee folk who posted about the flip-comment feature on that site.

I'm curious, do other people do that? How do you work it in with regular OOC addendums?

I agree. GMs on GP already have too much power in some areas where they really shouldn't have any. Altering character sheets without any player consent requirement is far too much. In fact, I'd prefer if there were player-side checkboxes on what GMs are allowed to do with that player's content. I wouldn't straight up leave a game if a GM edits or rearranges some of my content once, but we will have a serious discussion after that regarding boundaries.

Personally, when I GM, I don't edit characters or posts of my players even if they are obnoxious. I just kick them out of a game and murder their characters if they are also unwilling to listen.
I try to avoid OOC as much as possible in an IC thread. Usually, I am able to weave the mechanics in my IC writing just fine, but sometimes I add clarifications on what specific ability I was describing in case the GM or other players aren't in the mood to solve puzzles (I expect everyone to pay attention, though). In no way would I tolerate someone altering my posts to add OOC. A proper way would be to send me a DM and ask me to clarify in OOC in a case when it was unclear.
When two players or a player and a GM post at the same time. Still, it's better to discuss it in an OOC thread and rearrange the posts manually by deleting and rewriting them.

It's quite possible for a GM to copypasta the post and post as your character, and it will still show that the GM made the post. Put up a screenshot of any rolls. Not the ideal way to handle it, but an option.

This is handled best by good communication. Being able to let a player know that their post night need to be changed to reflect pertinent information that comes later. This is an aspect of asynchronous play that should be considered for a game-to-game basis.