I came across caseinterview.com a few months ago and I am very glad that I did. I have previously been interviewing with several of the big firms but without success (especially in the case interview part).
I just received an offer to join a European McKinsey office as an intern. Without the methods presented in your training videos and other material I doubt that I would have been able to get this offer. I am therefore very grateful that you have been providing the material on your site for free and will more than happily make a donation to www.kidpower.org .
Congratulations on your McKinsey internship offer! Thank you for your contribution to kidpower.org.