Tools (for Mac)
Python
Perl
Terminal
"Tools"
Smultron
TextWrangler
KindleGen
Kindle Previewer
Mobi2Mobi
Ye Trusty Olde VPN IP Proxy
Reader
Kindle 2
ePubReader add-on for Firefox
Lucidor
Vendors I'll Actually Buy From On A Semi-Regular Basis
Baen Webscriptions
BookViewCafé
Fictionwise
Sources for Free Books and Occasional Purchase
Amazon
B&N
Borders
direct from author (if offered on website in usable format and reasonable terms)
Feedbooks/Manybooks/MobileRead & other PG re-formatters
Google Books
Kobo
the library
Project Gutenberg & spinoffs
promotional giveaways
Sony
Smashwords (for rights-reverted backlist print books)
Sites for Info
EreaderIQ
Inkmesh
MobileRead
ThreePress Consulting Blog (creators of epubcheck)
certain sites that are to remain nameless due to MR considerations re: discussing