If you're annoyed about the “Pages You Might Like”, section of Facebook, you can hide them with some CSS tricks.

Get the Stylish add-on for Firefox or Chrome which allows you to apply your own stylesheets to any web page. Then, install my style which applies the following rule.

@-moz-document domain("facebook.com") {
    .ego_column {
        display:none !important;
    }
}