Bout 4 years ago, I was spending about $4000/mo on Adwords, with some nice results. About 2% CTR on the ads, most of which were banner ads on the content netwo

Bout 4 years ago, I was spending about $4000/mo on Adwords, with some nice results. About 2% CTR on the ads, most of which were banner ads on the content network, average about 20 cents PPC. About 50% of the people clicking on the ad would download our game. About 25% of the people downloading the game would run it+create a character. About 5% of those who ran it would eventually pay a monthly subscription. About a $35 customer acquisition cost, and I basically put all free cash into Adwords. Only thing that slowed it down was an average time of 3 months between joining the game and becoming a paying subscriber. Fast forward to about a year or two ago, every metric for traffic from Adwords has plummeted. CTR's are 0.5%. Percent of people who hit the landing page and download are less than 1%. Percent of people who download and run the game to character creation is about 10%. Percent of people from Google who end up ever paying anything is near 0%. The cost of customer acquisition via Adwords has basically approached infinity, and I've basically stopped using Adwords altogether. Nothing I've done has seemed to get things right for Adword traffic, and that includes following all the advice from them. Meanwhile, traffic from Reddit converts just fine, there just isn't that much traffic from Reddit available. Anyone else have experience while a huge degradation of the "quality" of traffic from Adwords? I'm at the point that this article mentions where no amount of bid manipulation can make PPC advertising via Google profitable.