When I was a Yahoo user a couple of years, I felt depressed when I can't log-in into Yahoo to check my mails and also Flickr, I logged in again in Yahoo, but nonetheless, I sacrificed myself to switch into Google and Gmail. For later on I'm about to use my Google account widely. I used Gmail for a few times until I used for a lot of time. When I added some contacts from ymail (Facebook) to gmail, I found that there are few of them have gmail account. None of these contacts are from Google users.
I heard that Yahoo had agreed a deal to buy Tumblr HK$11.1 Billion, I'd rather use this blog-site despite being difficult to use.
I sometimes use Google+ but I'm not fond of using it, I'm more on Facebook to see games, I don't think that there are some games that Google + had?