"probably more for the ego compensation then a monetary one"
Nice to see your being realistic there. 

"number of times your freebies might be downloaded"
Good point there Ziggie. I've been stung by excess bandwidth fees a few times. Not fun. 
You can use rapidshare or other free file hosters but that's not popular and it takes effort to maintain these types of hosters. 

"the number of times "
Folks will use your stuff - but they don't always credit you. Easy to forget where you got something from. Guess I've been lucky here - many artists who use my signature piece credit it.

"feedback"...
If something doesn't work or the person needs help you'll get feedback. 
But another regular question for freebies is often "is commercial useage OK". 

Though my favourite ones are from teenagers who use your stuff on a school project and call it theirs. They always ask you to "turn off" your website so their classmates don't find out!    

Another strange one is cease and desist notices from folks who buy a "boxed " mobile ringtone-wallpaper website. But I don't get nasty in return they are victims as well. 

When you explain all they've bought is a collection of images stolen by taggers, most are quite rightly very fed up and usually you end up trying to help them.

Pinky - you left the lens cap of your mind on again.