E-Published? Which Company?

Subject: E-Published? Which Company?

With the advent of so many TG authors publishing their work on various ebook sites, I was wondering WHICH format people are moving toward...

Kindle ( Amazon ) has any authors whose names are part of our community, but less so over on Nook ( Barnes and Noble).

So if you have your work on one of these sites,( or another) let us know so we can support you that way, and if you could also tell us why you picked one format /system over the other?

Thanks in advance!
Sapphire

ps: if you can give any advice to those who want to go in that direction, in ADDITION to posting on line, please do so too!