hey tyketto
The official METAR is not updated as frequently, once an hour or specials.
The page i linked has a consistent "every 5 minutes plus every METAR" format.
Sometimes the wind changes quite a bit and the METAR is not changed. Most of the time you hear it on tower frequency so i agree it might not be that useful.
But if you want to check how the wind changed i find i quite interesting.