Website popups. Arts marketers use them to gather much needed patron contact info but they can do more damage than good when applied in a ham-handed way. If you’ve been willing to run that risk, you should know that Google decided to make you an offer you can’t refuse in order to get you back on the right path.
Simply put, google is starting to ramp up search rank penalties if your organization’s website serves certain types of popups on mobile devices. In short, if you use the same type of popup on mobile that you do for desktop (one that blocks content until the user converts or clicks past), you’re going to get penalized in the form of showing up lower on search results.
I published an article at ArtsHacker that provides everything you need to know to tell if your site is using good or bad popups. If you end up in the latter group, it also provides what you need to begin fixing them.