Hello
I wanted to make a suggestion
1rst of all if you can t do it, or don t want there is no matter for me it s just a suggestion.
ok, in my opinion the most important part in a ecard is the thumbail if an user like the thumbail he will automaticaly love and send your ecards.
Facebook is maybe the biggest website for sharing contents. But i think facebook is not good for sharing pictures and they need to work a little more on that, because instead of reseizing a picture facebook prefere to crop it, and i think it s not good. Because on facebook nobody (not a lots) will click on a croped picture. Because users smell a crap behind that.
That was the problem and the problem come from facebook not 123greeting.
But maybe what you can do it s displaying our 115px x 115x thumb with the sharing button, i think it will be more proper than a cropped pic.
There no problem about that when we are sharing our Ecards link from page fan, because when we are sharing a link we are able to add a custom picture from our computer that is great feature from facebook but not alowed from our profil.
Voilà, that was my suggestion