Magazine about Getting Things Done and Lifehacks. Edited by Michael Sliwinski founder of Nozbe. “The best productivity bloggers on the Internet send us their tips and tricks. Michael interviews a person he admires. Every few months we publish all this in a FREE PDF magazine format.”
Site is a combination of discussion board, blog, wiki, and probably some other things -- includes a huge repository of ebooks in several formats. Of particular interest to Kindle users, the downloadable mobipocket guide is a .mobi format hyperlinked index of all kindle/mobi compatible books.