STEVE R  I absolutely love this app. Recently I created a website for a mailing list's longtime anniversary and members sent in photos of themselves that I made into a poster to upload to the web. It was easy enough to change the size of the allotted squares to fit group pictures, ie customise the templates offered. Once the poster was created, I took screenshots that I then combined to make banners for the webpages. Everyone was impressed with the results. I purchased the app as part of a bundle, which is the main reason I purchased the bundle. I may not use the app on a daily basis but that doesn't take away from my enthusiasm.  
(Version 1.6)

BIGVEE  This program is useless. It is not user friendly and I found it really hard to change background colors. Moreover, there are very few templates for posters. The worse thing of all though is you can't print the posters yourself. You have to send them off. I tried to print the posters through Preview and through i-photo but neither worked. What a waste of money and time.   
(Version 1.5.1)

GAINESTOWN  Doesn't seem to work with mail.app in 10.57 Nehalem environment. Click on 'mail' does seem to render something but isn't communicating with the mail app. Quite sad.  
(Version 1.5.1)

ROBERTCOOGAN  I bought this waaaaaaay back, and my registration ran out. Great app, but one thing that bugs me...the dev could make it much more successful if they made it web-based. I use it now but only on occasion. I can see most users buying what it can offer on the same basis, but only as a novelty item. As a permanent app, no. The average user can't make much of it that way. But I wish the devs would expand it...it is such a great concept if they sold what it can do on a per service basis it would be better.

This isn't a negative criticism! It really is a good idea..., but needs to be expanded (access-wise) without the associated cost.  
(Version 1.5.1)

TECHCHICK99  The running MU Promo brought me back to Posterino. I bought it a long time ago and didn't use it for a long time. The possibility to create a huge photo collage is great with this app. I made tons of photos in the last couple of months and created a great poster for our bedroom yesterday.

Posterino was easy to handle and the collage was created just like this.

Thanks!  
(Version 1.5.1)

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)

TERSKAC  After using Posterino a few years I still think it is great. Don't hesitate to try it. I have a few programs that I think are really innovative and this is one of them.   
(Version 1.5.1)

F451  I am interested in this app, but here is no way to utilize the neat postmark watermark feature unless you use their postcard service. Too bad as I would like to see on the other means of exporting.  
(Version 1.4)

FUNJOY  Seems ridiculous to charge for electonic postcards. Do yourself a favor and spend $5 on 'Postcard' and make as many Apple iCard-like postcards as you like.  
(Version 1.3.2)

MACSTERDAM  Seriously underrated, I think, and should be part of iLife. I use it all the time and feel 5 stars doesn't do it justice - it really is that good. So here, another 5 stars, both for the developer and the software!  
(Version 1.1.2)