Pinterest CEO Ben Silbermann announced during an event in San Francisco last week that users of the social visual discovery tool have created more than 750 million boards and contributed more than 30 billion Pins since Pinterest was founded in 2010. Acording to Silbermann, the number of Pins has grown by nearly 50 percent during the past six months, due in part to the introduction of Related Pins about a year ago. More than 90 percent of current Pins are connected to Related Pins.

“Silbermann compared Pinterest to curation that already exists elsewhere in the world,” reports TechCrunch. “Specifically, how collections on Pinterest are like curated art in museums, articles and photos in magazines, and collections of clothing at a retail location.”

In recent months, Pinterest has introduced a guided search feature to its mobile app, the ability to create custom categories, and Place Pins that “combine the beautiful imagery of a travel magazine with the utility of a map online so you can share it with friends,” explains the Pinterest Blog.

“In March, Pinterest said that 75 percent of its traffic was coming from its native mobile apps,” TechCrunch notes. “And previously it announced that mobile traffic grew 50 percent in 2013. eMarketer now pegs Pinterest at 40 million monthly users in the U.S., an audience big enough to drive serious ad revenue, and that doesn’t seem to include mobile.”