Pinterest’s promoted pins and ads have made a huge splash in the 18 months of beta testing its small platform with select brands, and now it is set to become even bigger. The site is rolling out its ad tool, Promoted Pins Ad Manager, to all small and midsize brands in the United States.

The company also announced it would be increasing the number of interest-level targeting options from 30 to 420. In the past, advertisers could only choose from 30 broad interest groups such as food, beauty, and fashion. The new options are more specific, so marketers can target their audience much more accurately with categories like “healthy food,” “sustainable architecture,” and “street-style fashion.”

“Pinterest knows more about the interest of its users than any other platforms,” said Nipoon Malhotra, Pinterest’s ad products lead. “This is very different from a graph that represents something you browsed a month ago.”

Pinterest also noted that marketers who spend at least $1 per day advertising on Pinterest see a 20 percent increase in clicks on their posts.

Pinterest Pins function just like normal Pins on the site, however, they are shown to more people than a typical Pin. By using the Pinterest Ads Manager, you can target exactly who you want to see your Pins based on interest targeting, keywords, or customer database targeting using your customer list.