You can now highlight posts on your Google+ profile page by pinning them

Google has released a new feature for its social network, the ability to pin posts on profile pages. If you have ever found yourself in the position of wanting to keep a specific piece of content at the top of your Google+ profile page, then this new functionality is for you. It's a small change that will go a long way to show off that incredible shot you took on holiday.

source: androidcentral