Dogtrousers
Kilometre nibbler
That's pretty much how I see it. Like a crossword the aim is to get to the end.It's also interesting how differently people consider success in the game. Personally I don't aim for a minimum number of guesses, if I get it in the allotted six then I've completed it and that's that. I also barely think about my opening word, I just use either the first or the sweariest (because I'm a forty-four year old child) five letter word that pops into my head. Thinking too hard about strategy would take away the fun for me, I like the simplicity.
My one "fail" was when I tried to do it in record time, simply blasting it with guesses. It didn't help was also only the second or third time I'd tried, and I didn't realise you were limited to 6 goes.