BENGT77 I haven't used Posterino, but for the people wanting to use either Posterino or PostCard solely as an iCards alternative, there is PopCard.me: . It does almost everything iCards used to do and be. It offers a simple web interface where you can select standard pictures to make your own greeting card, the text on which will be nicely anti-aliased. When sent, the receiver only gets a JPEG of the card you sent, just like iCards. There's one difference, however, which makes PopCard.me even better than iCards: it's connected to flickr, meaning you can make a card from ANY flickr photo. Very nice.
I found the service a little while ago, while searching for good iCards alternatives (well, not alternatives, iCards is long dead).
(Version 1.5.1)