Is webmastertools good for this?
 

I am looking for something that will show what keywords I am ranking for and what position. Does dr G webmastertools do this?

I just realized it does this. Sorry for not checking first. Now more importantly, is using google webmastertools in any way something that can hurt you if you use it on all your sites?

Try statcounter dot com .

I see no reason to use it.