There is a greasemonkey script somewhere, i have it, just gotta look for it, that automatically redirects you to the download page by looking in the source code for the link and just going to it. Bypassing everything. I only use adf.ly since I got on it when it first started. The problem with people on the MC forums is they use the long ads instead of the short ones. they could get more clicks and ergo more money if they used the shorter ones.
EDIT: I found one here, https://userscripts.org/scripts/show/89322 . It works well enough for adf.ly, doesn't even show their link, just goes straight to it.