Tags running over into sidebar

Without a link to the site, no way to know or offer any help. Or try using a browser tool like Firebug to see what’s going on with the CSS code.

Don’t know if this CSS is part of the theme or something you changed, but this is why:

body div#content div.entry-meta {
    clear: both;
    width: 150%;
}

Change that to 100%