EasySocial - Why is line 2 of the address required?

When using the address field of the provided EasySocial profile each line must be filled out before you can submit the profile. It features two lines for the address, yet in the USA we usually only need 1 line for the street address. Both are required and something has to be entered before you can successfully post the profile. Can this be changed so that users here in the USA are not confused? The first, third, and fourth lines can be required, but the second should be optional.
Michael Leavitt - Orem, Utah - http://www.TheHomeInspector.com - Michael Leavitt & Co Inspections, Inc.