About $400/mo over a few sites. Best earners are B2B, non-tech related (business-related tools rather than content-based). Takes just a few thousand visitors an

About $400/mo over a few sites. Best earners are B2B, non-tech related (business-related tools rather than content-based). Takes just a few thousand visitors and a few dozen clicks to see that revenue. Consumer-oriented sites will require many more views to get clicks, and those clicks are worth less. And the rise of ad-blockers and general awareness will have a greater impact there. My sites are also most-viewed on and optimized for desktop use, as they are used in an office setting. Perhaps with a greater shift to mobile, either your ad types are less likely to be clicked or less-likely to be served up at all based on your site's layout and mobile-friendliness?