One thing that blogging for over 10 years has taught me is that there are a lot of crazy people online. I've found it out the hard way with some of the projects posted here in the past. Requiring an email is my way to try to mitigate some of the crazy stuff that goes on. Also, if I just leave a link exposed on my blog for someone to download a file, then bots can find it and that's bad for everyone.If you don't want to stay on the list after you subscribe you can just click the unsubscribe button at the bottom of every email I send.