DKII on 20 December 2007
I hate to go all Bill Clinton on you, but it depends on your definition of "accurate".
Is it good enough to sell commercially and compare directly to most professional tracking services? Not really, no.
Is it good enough to view general trends, especially considering it's available for free and is the only source anywhere for worldwide numbers? I happen to think so.
Not the most productive first post either, by the way.
