You could just add some text to a pic like this:
or make a collage like this:
and Picnik even allows you to fix blemishes like the candle soot on Mike's nose from my birthday festivities:
after the blemish fix (click on the 'touch-ups' tab):
There are frames to add, effects to add, text (and lotsa fonts to choose from peoples), and more! Picnik may be used to print photos as well as share online and they are not paying me for all this praise! So go, grab some photos, have some fun, save them, share them and go print them with Picnik or your usual photo printing service and Have Fun!