See http://input.mozilla.com/en-US/sites?product=firefox&version=4.0b12 The "Uncommon sites" section should wrap/be hidden (using either a title attribute and overflow: hidden; or word-wrap: break-word;).
Fixed in https://github.com/fwenzel/reporter/commit/eb6d9782447187626120eac29b76d818ede8ed4a Should be on staging soon; can QA verify?
Created attachment 537896 [details] Wrapping urls QA Verified. The urls are wrapping: http://input.stage.mozilla.com/en-US/sites?product=firefox&version=4.0b12
I think well want to iterate on this again, the wrapping urls work but there might be a nicer looking design (see attachment 537896 [details]).