I post my original content to those other websites, those which will not be mentioned in polite company. You know what I mean, you dirty minded creators. Wink wink, nudge nudge.
Just kidding, I have only ever uploaded my books to Tapas. I might upload to Wattpad soon if I ever get my computer situation squared away. I haven't really bothered because I don't care much about the size of my audience. I'm motivated to contribute source materials to the bulk of pubicly accessible IP, thus I released Alien Fiction with Creative Commons licenses.