Brilliant concept, haha. I like that it becomes a game of quickly figuring out what to delete and what to keep.
I wish you had more fweets and variations in sentences, which would make it even more confusing when it starts to go faster. Personally, I found the typing quite annoying, as you have to let go of your mouse and hence can’t clear stuff on screen while typing.
I feel that the idea of just moderating fweets is a great idea and I hope you explore that idea further. (eg. what if all you had to do was delete fweets, and eventually you have to make your own filters because there’s just so many… idk)
Overall good job tho!