I can't see the LinkedIn Share button in your article. You should be able to use the following CSS to make it float left when you add it:
.jlinkedShare {
float: left;
}
If that doesn't work, just let us know when it's on a page and we'll be able to test the CSS on your site before sending it.
Again though, if you're adding the tags manually, that can get tedious. If possible, we'd recommend using the JFBConnect - Content plugin, which can add those buttons automatically. Once enabled, you can configure how it works in the "Social" section of the JFBConnect admin area.
Finally, no, there's no way to send an email on shares. Facebook, and all the other networks, are limiting the ways you can track what a user does on your site. Hooks to let you know a user Like'd or Shared something are being very limited or going away altogether (depends on the network). There's little we can do about that.
Thanks,
Alex