Americans’ addiction to social media is deepening, according to a new report that found that while Facebook devotion has plateaued, other social networking platforms are gaining in popularity.

In an analysis of social media use, the Pew Research Center reported Wednesday that messaging apps and new social networks are gaining popularity most quickly among American adults.

The Pew report found that 29 percent of American adults use messaging apps such as iMessage, Kik or WhatsApp. That trend held up across all ages of adults. Those between 18 and 29 years old were the heaviest messaging app users, with nearly half using messaging apps. But even among older users, these types of services have taken hold; nearly a quarter of adults 50 and older also use messaging apps.

“The emergence of messaging apps is noteworthy, as these communication tools serve different social needs than traditional online social networks,” Maeve Duggan, a research associate at Pew Research Center, said in a statement. “The data also show how swiftly an already complex terrain of interaction is becoming more varied.”

Newer social networking platforms achieved the most growth – namely Instagram and Pinterest, which have doubled their user bases since 2012, the study said.