Just a testament to Ultimate-Guitar:

A while back, I got an issue of Guitar World. It had "Welcome Home" by Coheed and Cambria tabbed out. The day before, I had gotten it off of UG. When I played the one in GW, the little sweep in the intro sounded crappy. When I used the one from UG, it was dead on!

You'd think they'd be more motivated to do it right when they're paid for it!