Fetching bad data

I think this is a Yahoo mistake, and if it is then it highlights the need for more options for data sources.

It seems to be fetching a relatively accurate value for XAU/USD but is way off on XAG/USD. In the display and in the error log I get "currency: 1 XAG = 13.344 USD" - which at this date is clearly wrong. Kitco [ http://www.kitco.com/ or http://www.kitcosilver.com/ ] reports a spot price of $16.85, and the really cool eBay metal scraper at http://www.24hgold.com/english/buy_sell_silver_coins.aspx?co_id=0 reports $16.82.

[Side note: I'd LOVE LOVE LOVE to have a data source that fetches the "Silver Rounds 1 Oz" "Implied Physical price now" value (which should be closer to a real, on-the-street price than spot is).]