Hi,
I'm the developer of the site. macapps.link always uses the download link provided by the author. Take a look to: http://macapps.link/en/firefox and locate the following: installApp "dmg" "Firefox" "Firefox.app" "http://download.mozilla.org/?product=firefox-latest&os=osx&lang=en-US" "" "" ""
If you try with any app (http://macapps.link/en/firefox-chrome-thunderbird-spotify-dropbox) you'll see :P
Thanks @CodeDeliveryBoy for posting!
New user? Get all the best Mac apps here.
Also, Google tips and tricks on how to use Macs, I have a lot from friends who switched to Mac, but doesn't know the basics, ang sad lang nila panoorin gumamit ng Mac.
There's also a switching from PC to Mac guide sa Apple site.