Footer 1, left aligned.
Footer 2, with text-align: center; place cursor to left of links to see strange hover.
Footer 3, with text-align: center; using a list. A possible fix, using display:inline-block for IE mac. This is best used within a static design, as each link block must have a fixed width.
Footer 4, with text-align: right; using a list. A similar fix, using display:inline-block for IE mac. As above, it is best used within a static design, as each link block must have a fixed width.