This excerpt taken from the WFT DEF 14A filed Jan 15, 2009.
The SEC permits a single proxy statement to be sent to any household at which two or more shareholders reside if they appear to be members of the same family. Each shareholder continues to receive a separate proxy card. This procedure, referred to as householding, reduces the volume of duplicate information shareholders receive and reduces mailing and printing expenses. A number of brokerage firms have instituted householding.
As a result, if you hold your shares through a broker and you reside at an address at which two or more shareholders reside, you will likely be receiving only one proxy statement unless any shareholder at that address has given the broker contrary instructions. However, if any such beneficial shareholder residing at such an address wishes to receive a separate proxy statement in the future, or if any such beneficial shareholder that elected to continue to receive separate proxy statement wishes to receive a single proxy statement in the future, that shareholder should contact their broker or send a request to our Investor Relations Department at 515 Post Oak Blvd., Houston, Texas 77027. Telephone requests may be directed to (713) 693-4000. We will deliver, promptly upon written or oral request to our Investor Relations Department, a separate copy of this proxy statement to a beneficial shareholder at a shared address to which a single copy of the documents was delivered.