One of the various things we heard from members when the Communities site was migrated at the end of 2013 was what the new things were. In this migration, there is something called "Tour Tips" included, which are meant for first-time, new members and display short description bubbles that point to important home page areas and items. Tour Tips are designed to quickly engage a new member with the community by pointing out:
Sign-in or -out
Profile and Settings
As mentioned in communities.bentley.com/.../communities-platform-upgrade.aspx, we are looking at upgrading the communities platform very soon.