Google has apparently been testing this feature with a group of users for some time, as there are already a large number of collections available. The site has also curated a list of featured collections for those who are looking for new topics to follow or who want inspiration for their own collections. Some examples of early collections include everything from this cat-themed Caturday board to this one on black and white street photography.
Like Pinterest, users can also follow collections they like for updates in their main home stream. The feature is available on the web and Google+ Android app now, and will roll out to the iOS app later. Each collection can be shared publicly, privately, or with a custom set of people.
The latest update comes as Google+ looks to shift the platform into two more focused areas: Photos and Streams. Though Google’s social network looks much the same as it has for years, the company has recently noted changes in the way it thinks about the service, suggesting it may eventually break out the platform’s photo sharing and messaging features.