Trulia eventually pulls the info from the MLS but it is up to your agent to get it on ZIllow , trulia, ect promptly. You are missing out on a lot of buyers searches. Anybody can get or have a real estate license, but that doesn't mean they are up to date on listing your home correctly. Last number I heard was 46% of real estates sales are found on the Internet. That's a big number to not be apart of.