If you'd like free and direct access to the MLS, you can use http://www.corehomesaustin.com
For example, homes that are allowed to appear on Trulia can have up to 25 data fields changed, such as PRICE and STATUS which the agent CAN NOT CORRECT! (See edit my listings on Trulia)
The agent should realize the seller and buyer will assume the agent is attempting a 'scam' of some sort. Further, the information that remain on the sites and others, creates a hazard for the new home owner that could allow stranges access to private areas of the home.
The contention that restricting information on irresponsible websites has self-serving motives is indicative of those who have little concern, or knowledge of the perils and hazards created.
The brokerages who have taken the necessary and courageous steps to protect their clients should be commended. The consumer ALWAYS has the option of searching for Austin homes for sale in the locat MLS where the agent is able to control the homes information. It is FREE, accurate, timely, comprehensive and responsible.
Try it out. It only has active listings of houses for Sale in Austin. You can also search for rentals and leases.