Blocksworld is owned by Linden Labs, producers of Second Life. It appears that artists are allowed to taken screen shots of their creations and use them commercially.
Very long article with lots of great tips in a very conversational style
Excellent description - lists of verbs
Steve Scott interview
How to save Pages documents in DOC format
Excellent in-depth article with explicit examples and instructions on how to use ebooks in marketing
Book editing timeline free to embed on your own content using the embed code.
Great guest post with tips on creating content that will go viral. Uses interviews - see for Lesson 11