Why are my sociable icons spread out?
 

At http://digitalageparenting.com/

If I use the sociable css they are all jammed up on the left; if I turn that option off they get spread out over the entire line. Is this the result of some other css changes I've made?

Yes, you have a left margin on all LI's in posts:

.post ul li {
margin-left: 3em;
}

Add a CSS Insert

span.sociable ul li {
margin-left: 0 !important;
}