When they pushed everything into G+ it enraged me. They took away the nice, fast, minimal, grid-view albums and gave us a heavy social-network wrapped mess. They turned a powerful Flickr competitor into a "pretty" and feature-poor share-with-your-friends site.
It was embarassing to link to albums to my clients because it was basically me linking to a Facebook-style social network rather than a photo site. Throw in the "realname" bullshit so I couldn't use an alias for my photography, and blam... instant enraged ex-customer running CLI scripts to systematically wipe my 10 years of Picasaweb usage (you can't bulk delete on Picasaweb).
I was upset when they killed Reader, but I got over it. I was upset when they forced G+ onto YouTube, but I got over it (I just don't log in for YouTube now). I never got over them destroying the only semi-decent Flickr competitor that exists, all in the name of "OMGSOCIAL". I was a huge Google fanboy who now goes out of my way to avoid anything/everything they do, thanks to their G+ push.
I've since moved on to being not-so-happy Flickr user (the lesser of evils currently, for bulk photo hosting and album management).
For what it's worth, with people saying there's too many photo hosting sites... I still can't find ANY that are as good as Picasaweb or old-Flickr were. Easy bulk management of photos/albums and their metadata like tags/titles/descriptions/locations. Albums within albums. A SIMPLE UI that is friendly to non-tech-savvy clients/friends visiting. Minimal fluff. Lightroom integration. Etc etc.
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