If you care about search quality, then delete your Google+ account.
Google continues to integrate their in-house social media product Google+ into search results under the guise of “making search social.” But, they’re excluding and demoting results from many other social networks.
Having a Google+ account active, even if you don’t use it, means you’re telling Google that this behavior is OK. It means you’re telling Google that it’s okay to base search results on a dysfunctional social network.
To tell Google that you don’t support integrating Google+ into search, you must delete your Google+ account.
If you keep your idle & inactive Google+ account around, you’re becoming one of Larry’s statistics. He’s counting you in the “active users” count, even though you’re not using Google+. Google will continue to attempt to optimize it’s algorithms to your inactive network.
Deleting your Google+ account is the one and only way to truly send a message telling Google that you don’t agree with their social integration strategy. Do it now.
I deleted mine, but it didn’t do any good. Google still recommends their new search to me no matter how many times I tell them to quit. The most frustrating part is that they are including “personalized” results from people who I can’t “unfriend” now, so if you don’t delete your spammy friends before deleting your account, then Google will permanently use the information from your old account if you log into any of their other services and then try to search. Not a big deal I suppose if you’re careful to only follow family, but it seems stupid for them to make the search results worse for those of us who’ve expressly told them we want to opt out of it.