I'm still on Pro but may just use the free account when it renews this August. I paid the $25 before so I didn't have a 200 photo limit, unlimited space, got no ads, stats and the ability to replace photos for when I re-edited a photo for whatever reason. That was damn good deal. I'm not even sure why free users even used the site with such harsh limits.
Since the free account doesn't give you stats are the replace photo feature, I'm having to dig deep to see if that's something I can live with, especially for ads.
I'm convinced Flickr wants users on the free tier. The paid options seemed buried in the interface, and even Pro users get a bump on how big of a file you can upload, as it damn near quadruples. I've got a couple of months to decide.
I've already reuploaded my photos (thanks to Flickr's handy "replace photo" feature and the Lightroom built in "republish" Flickr plugin) to 4096px (76 jpeg quality) from my previous standard of 1024px.
I still won't publish the full resolution pics to the internet, but I figure 4096px will look better on my Apple TV, Panasonic Smart TV, iPad 3, and upcoming 4k TV's. I better settle on the resolution because I won't be able to change if if I go with the free 1TB account.
I do wish more sites let you re-edit and replace photos and keep all your stats, favorites, comments in tact the way Flickr does (and why I still think Flickr is superior to everyone else simply for their organizational tools like this). Sometimes upping the resolution due to new formats that happen to come out or because you spot a mistaken or the photo is oversharpened, it's a real handy feature.