Flickr have a wonderful easter egg this Christmas – adding notes to the photo gives you Xmas hats and Santa beards. See here for an example. Furthermore they have extended the upload limits for everyone.
And it’s even better to give the gift of Flickr since now your recipients will get unlimited uploads — the two gigabyte monthly limit is no more (yep, pro users have no limits on how many photos they can upload)! At the same time, we’ve upped the limit for free account members as well, from 20MB per month up to 100MB (yep, five times more)!