What do you do with your skill points?

[Green]

I never really knew what was best to do with them back in the day and still don't now.
I remember training archery with them on my Paladin once.. Didn't help as much as I had hoped...

I am thinking about saving some time and using them to up my blacksmithing.
Only reason I hesitate is because you can't get them back..

What do you all use them for?