After switching to a new Android phone I noticed that a few of my contacts weren't properly linked with their Google+ profiles and images. Strange, as I could only see their name once in the contact list on the phone.
I went to http://contacts.google.com and apparently since the last time I visited they have added a duplicate detection and a merge feature. So a few clicks and voila! Now all my contacts are in order, and this time they will stay in order between phone upgrades since the "account merge/linking" information now is stored in the cloud and not on the phone.
Finally! Been wanting this feature for years! Thanks Google :)