for 3 months.
During the holiday season of 2012, Flickr offers a free 3 months Pro account. If you should already have a pro account, you get an additional 3 months for free. During these three months you get all the perks a regular Pro accounts has. Meaning unlimited uploads, statistics etc..
Ever since I switched from Flickr to SmugMug last year I let my Flickr Pro account expire, and it reverted to the limited free account. Yesterday I reinstated my Pro status again (for the 3 months). I don't think that I'll be going back to Flickr Pro. When the 3 month offer expires I'll default to the free account. SmugMug offers me much more. Things like dynamic photo albums (bases on keywords / tags), custom domain, layout, etc.. These are all features that Flickr lacks, and that I grew accustomed to.
So why upload a bunch of photos just for these three months? All for the cause of some extra free exposure I guess.