Open the Neighbors Tab... And leave the Tab open. If there are any users with "Add X as Neighbor" option, this will add him/her.
How does it work?
Simple, Fist list down all the friends. Find one with words "Not in crew" but not with "Request Sent" Find the input button whose class is "inputbutton request_form_submit" and click on it. Then weight for the confirmation box to appear, and click on "Send"
How to Install?
Any suggestions and comments are welcome.