Moo!
Not too long back I decided to create a Flickr account, partly out of curiosity and also partly out of a desire to have somewhere to dump pictures that I didn't want to place in the photography section of my site.
Then, just over a week ago, I noticed an advert for Moo. Given that a pack of 100 cards would cost next to nothing I thought I'd give it a go. If nothing else it seemed to make sense to have some cards with contact details in the camera bag on the off chance that you needed to supply someone with those details.
The cards turned up today (just over a week after placing the order — Moo aren't terribly fast) and I'm pretty pleased with them. They're small, clean, simple and come in a handy little plastic box. I'd have said that the images have turned out a little on the dark side but not so much that they're unattractive.
My only real complaint is that Moo is one of those companies/services that tries really hard to be "cute". They interact with you like they're your best mate (the package even included a little delivery card that says "Yay! You're our new best friend" – Ugh!). Like they're amazingly cool. Like using them is the best fun you can have. They're not. They aren't. It isn't. But the product itself is cheap, cheerful, self-designed and pretty handy.