Trading on the site began on March 17th, 2010
A major update to the site occurred in March, 2011. Among the changes were: smaller minimum trade size, 24 X 7 trading, and some steps to help ensure that payment would be made for trades that execute.
Though the site at one time was used for trading using PayPal as payment method, fraud caused the exchange to discontinue PayPal trading on June 4, 2011.
The Bitcoin Market website showed a graph of the Bitcoin exchange rate in US Dollars. This data was also offered in JSON format.