Most of my friends and family send photo cards with family/kid pictures with maybe a brief general update something like, "kid 1 is in 10th grade and was in the high school play, kid 2 is in 4th grade and enjoys soccer and dance. We had a great family trip to Hawaii this year, oh how great to travel again! Wishing you the best in the new year!" Most are sent directly from the card vendor (Shutterfly, Minted, Tiny Prints, etc) so it's kind of generic.
We send them too, only I hand address and mail the cards, might write a few short personal notes on the cards to close friends.