Got an email from RueLaLa.com offering anyone who signs up using my code (http://www.ruelala.com/invite/lifeinaustin) a $10 credit on their first purchase! It ain’t much, but every little bit counts. RueLaLa has quickly become my favorite of the members-only discount sale sites, surpassing HauteLook, who I still hang on to as my first sample-sale-love. But RueLaLa…