http://www.ceiva.com/lmore/dpr/sending_photos.jspThe auto update ones can get photos from anyone you send your password info to.
You mentioned sibs earlier, they could upload their pics and your parents would get them too, they might chip in for the cost of the frame and service again
You can send pics from your cellphone if you are away or catch something funny that the lad does when you are out.
You get unlimited pic storage space on their servers.
Your parents can select which ones they might like to order prints from, if any. Not sure what the cost of prints would be but beyond that, it's free to them.
They still work with a memory card as the other ones do.
The 8 inch one
retails for $250 with a 1-year pic plan. After that the rate is 99 bucks per year, plans come in 1 and 3 year periods (3 yr is 250).
If they don't like the auto update you can drop that part after the 'free year' is up and just use it with the cards.
The 8 inch one can pop 50 new pics a day up for them, that's a dose for even the most doting grandparents.
The update phone call is free (here) and it takes place overnight. It's automatic.
There are features that they will likely never use, wireless, broadband etc. but they are there if they ever want them.
When I looked at them before they were smaller and had fewer features. Still, the only thing that stopped me buying it for my parents was it wouldn't do the free update from overseas and I didn't want to give them a gift that cost them 100s of quid a month making transtlantic calls while they slept.
In the end we bought them laptops instead.
There may be other ones with better resolution but to parents the age that ours are, that isn't going to matter.
They go for a steal on eBay.
Did I mention it's automatic?