Right now, if you visit the IFA.com home page you will see an offer for a free e-Book version [pdf] of the book Index Funds: The 12-Step Program for Active Investors if you fill out a ‘Risk Capacity Survey’.
This is actually a pretty good book; I’ve read it, own a copy, and consider it an important part of my personal investing library. It explains through a variety of studies, statistics, and examples why passive investing through index funds is a prudent decision. Check out my more in-depth book review here for more information. It’s not the most eloquent book on passive investing ever, and it’s very long (almost 400 pages), but I have found it very handy as a reference text. I’m happy to get the PDF version since I can now search for specific keywords and phrases.
I took both long and short risk surveys. The long one is kind of interesting, but if you are short on time or just want the e-book you can just pick the short 5-question version. (I ended up at the “85” portfolio again, if you’re curious.) You will get the download link via e-mail immediately after completion. You don’t need to share any other data unless you want to.