Anyone who comes up with a conclusive alternative reason has my deepest respect. Thinking about "marketing" once again: What if I'd make my disk encryption software available for free for use by anyone in the world? Hmm.. in the long run this clearly is desirable for a company that needs to make money as some users might want to purchase the "ultra-extra"-"whatever" version which is still for sale for whatever reason. Then somebody from some nasty evil country downloads the thing from my server and I might get big trouble with the customs department. Why? well, I'd make dual-use goods available to potentially evil people. So today I can only provide a crippled version for download and users MUST purchase something through a channel that enables me to check their identity. Ok, but there are guys out there who clearly make market-leading products in terms of installed software packages and who can hand out to software to whoever they want. Their software is free of charge which in turn means that it's impossible to beat that thing on the market. Pretty weird, isn't it? Maybe the group of programmers receive "donations". So I began to analyse the thing and I found a couple of severe security holes. I even needed to reprogram my entire software in order to strengthen the thing so that it is safe to use. I published my findings and the solutions that I've chosen and - of course - all of that got slammed. Even Bruce Almighty did his best to find nice words for my solutions. So I knew that I did it right ! You see, peer review is easy to get. I't although only a matter of interpretation... I guess that I should ask some experts at the ministry of economy if I'm allowed to release the software for anonymous download. As a reference I could use this or older threads. Chances are better than 0% that I'm allowed to release the thing for anonymous download.