Here in the Atlanta metro Area, we have two different competing MLS's which require manual input of listing data. Now, in order for our listings to show up on Trulia and Google Search, KW agents must input the data yet a third time into our company's own listing service (KWLS). I suspect that other brokerage companies must currently do the same manual entry.
While the process is presently time consuming and costly to the individual agents, I believe that it is only a matter of time before new & better solutions for inputing listings are developed. Candidly, I was reluctant to initially spend the time inputing the data into our KWLS because of the additional effort (i.e. time = $$$), however, I think that by doing so, we are marketing and maximizing exposure of our clients' homes using some of the best real estate specific search tools available today.
Keep watching Trulia because there are other features (i.e. the ability for agents to upload disclosure documents and related) coming soon as well.
Ted Shoop - ABR, e-PRO, Realtor
Keller Williams Realty Atlanta Partners