SE had very high standards for ads on Stack Overflow, ads were curated, generally static images and well-behaved. I found the stance SE took on acceptable ads admirable, and they certainly left some money on the table by keeping the standards this high. There are now ads on other sites in the n...

For several years we've had advertising solely on technology-related sites. But many of our sites aren't about technology at all, so we haven't sold ads for them. Traditionally, that hasn't been a hardship since Stack Exchange sites have required only a small investment from the company to set up...