Still this is an important step, and it is the second one the WTO has taken in two years - a very short period in the geological timescales of trade negotiations.
The other was an agreement on simplifying trade procedures, the one concrete achievement of the negotiations called the Doha Round launched in 2001.
So a significant step towards more liberalised trade has been taken. But the WTO has the rest of the wide ranging and complex Doha Round still to do.