Q: How do you label pictures with names or places or dates

With iPhoto that will have to be done with a 3rd party editor or a watermarking app.  A free watermark app that will work when you export a photo is BorderFX. 

3rd party editor can be used from inside iPhoto as the external editor of choice. 

Border FX for iPhoto requires OS 10.7 or above. Does it actually work with 10.6.8 ?

Opps.  Forgot about that.  Haven't dealt with these "old" systems in a while.

Therefore pboscar27 will need to investigate using a 3rd party editor:

Some Image Editors That Support layers and text:

Photoshop Elements 11 for Mac - $79

GraphicConverter - $40
Rainbow Painter - $30
Imagerie - $38
Acorn - $50

Pixelmator - $60

Seashore - Free

GIMP for Mac - Free

Tut tut

Alas, poor Yorick! I knew him, Horatio: a fellow

of infinite jest, of most excellent fancy: he hath

borne me on his back a thousand times; and now, how

abhorred in my imagination it is! my gorge rims at

it.