I don't care for the changes made to either Flickr or Google+.
If Flickr wants to add an alternative display format, so be it, but they should have made it a layout option rather than forcing it on everyone. ; The old layout had a sense of order, whereas the new one is just a bandwidth-hogging jumble of photos. ; I like to add captions and descriptions to all of my photos. ; Now, few people will see those.
I also miss the simple thumbnail view of photo sets. ; I'm now reluctant to go searching for a photo in my sets because the main screen for each set is the same layout as the photostream.
And have you seen the new slideshow? It looks like something created by a ten-year-old. ; I don't want my pictures moving all over the screen, I want people to see the entire photo.
Now I have to go to another screen to completely log off of Yahoo. ; They need to bring back the "Log off of Yahoo?" link on the screen that appears after I log off of Flickr.
Granted, the changes to Google+ weren't as drastic, but making photo "enhancements" the default setting is not a sign of an organization catering to professional and advanced amateur photographers.
The things that will keep me on Flickr are the ease of linking to the photos, the ability to customize my URL (flickr.com/photos/ddindy is so much easier than whatever gobbledygook is necessary to get to my G+ page) and the easily viewed statistics. ; I especially like the referrers list so I can see how people are getting to my photos.
But that's just my opinion.