Just like every other guide on this site, some will not benefit from them but there will definitely be those that will. If the guide isn't for you then no need to shit on it (provided it's not a repost or a really terrible guide). I can think of a few different scenarios where this program can prove at least useful. I travel across the globe a lot so sometimes I have to play at 600-1200 latency. Due to this, in between periods of wrath/frostbolt/lightning bolt spamming, there's a half second (depending on how fast i can manually spam the keys) when I'm not casting anything, which is a very significant dps loss.