http://samplelonglinkthatgoesonandonandononandonandononand
oandononandonandononandonandononandonandonallacrossthebloodypageifyouletit.com

edit: hm, well, it seems to function as I'd expect (given this example was non-functional to start with!) However, you could always try a soft carriage return or line break: hold down the <shift> key while you hit the <enter> key