i love the topic that you have, i am involved in LDR and i love to say that it works for us, just han19 says on the start of this thread, MORE TRANSPARENCY to have it you must have a constant communication, and yeah coz of the modern technologies that are available of todays world, it helps a lot.
YEAH, temptations is around but its up to you to pick it up, & suffer the consequences later....
in my LDR case we are so transparent. before & after worked we are seeing,chatting each other...& while in duty talking each other,updating everyday life whats going on,asking permission to go there or to join the party,mall/bar hopping or whatever...its just a matter of TRANSPARENCY guys...even if you are in a skin to skin relationship, if you dont have this in your relationship it will be a waste...