Adblock lacks proper, safe transparency for its updates. This is a huge problem for me considering the extreme privacy danger that extensions can cause users who can be victims of silently updated extensions with malicious attacks on privacy, etc.
Extension can track every website you go to. Extensions can even record everything you type in your browser and report it to others. That includes emails, passwords, instant messages, bank account information, etc., etc.
Unfortunately, the only way as of 4/22/2014 to find a sparse changelog of Adblock updates is by actually downloading the Adblock extension to your hard drive and taking it apart to find some release note hidden inside.
Others and myself have repeatedly asked Adblock to change this confusing policy and have requested that the Adblock developers clearly show an easy to find changelog on their website. They continue to refuse to do this.
Like most good Safari extension developers, Adblock used to provide a changelog on their website. They got rid of it and that's a problem.