"Street name" is the name that the Brokers have(Ameritrade, etrade, choicetrade) and what the TA holds the shares in. Having them held in your name is just that, the TA will hold your shares in your name not your broker.
Harris is saying that he wants to know how to reach his shareholders and if it your shares are in the street name and not your he won't be able to, seems as if he is planning on having the share holders get access to certain info on line and it the shares are in street name then as a share holder you will not be able to get that information. It also seems that he planning on some special benefits for shareholders that hold the shares in their name....IMO