ShareThis problem

I downloaded the Share This plug in
I installed the folder in the plug in folder
I activated it in the plug in section
I went to the sharethis site and made my code and copied it and then pasted it into the options area in my admin panel as instructed

It still is not showing up at the bottom of each post.

I have uninstalled everything and tried again. still no luck. not sure what else to do.

any help would be greatly appreciated. Thanks