Answer:
You write on me and secrets I can keep. In places never seen. I spin like a top. Though stiff as a board I'm often described like a mop.
I am not very commonly found! Only in some rainforest! I have an odd number of toes! I'm very lazy and hang upside down! What am I?
What has 3 feet but no toes?
The Titanic is still here.
Physicists have built devices to move me very fast. My last seven letters can be commonly found in newspapers magazines and journals.
I flow from the Homerβs mouth when he sees doughnuts.