Really helpful list. Many thanks. As for the person who asked about submitting to multiple sites, I have not seen any detriment to that so far. I actually like seeing the same article come up multiple times in search.
Submitting to multiple sites can turn out to be an issue. I believe that it all depends on how many different sites you submit to. 2 or 3 probably is just fine. But, at the same time you really do not want Google to throw you into the hole for duplicate content. So, there are times when this practice may and can have its adverse effects.
It must took a while for you to collect all these list together. Awesome websites for traffic dude! Appreciate you sharing this with us!