Oddly, I believe I missed posting in this thread. Normally, I'm all over export control related threads as the unofficial ITAR mod. 

ITAR is largely obsolete, as it was basically written for 1970's or 1980's tech. Dual use tech is even more slippy. One of the few positive things I've seen the POTUS done was announce a working committee for reforming ITAR, as it's a huge regulatory speedbump in our international trade. It's entirely Constitutional (thus legal), but a pain in the neck and outdated. State Department issues rulings on edge cases that make life even harder.

Here's the reform notes thus far: http://www.state.gov/documents/organization/181028.pdf

Yes, even Obama does some stuff right once in a while. This is definitely one of them.

That said. Distributing firearm or weapon design files internationally still requires an export license. Don't do it without consulting very expensive lawyers. You can give them to each and every US person (US citizen, resident alien and a few other entities) to your heart's content. It's only transferring it internationally or to a foreign person/entity within the US that it becomes illegal without an export license.

So, yes, it's bloody insane in this day and age, but it's still the law. No, it's not some conspiracy or thought police. It's just a largely but not entirely obsolete law, that is still enforced.