1. No, the agents don't usually have to list the house other than on the MLS.
2. On many sites the homes will still show up even though they're pending.
Thanks for your question.
Debbie Albert, PA
Coldwell Banker Residential
In Rhode Island, they do feed automatically. However, I personally re enter all my listings, sometimes with different photos, just to get better coverage. Also, they tend to be a few days late by the time they actually feed into the sites. As for pending status...I have one now that was on the market and withdrawn two months ago (entered in mls) but still showing as active. Because it was "fed" into the system, I cannot get it changed. Zillow and Trulia and some other sites only recognize Active or Sold.
Other sites, such as Craigslist are manually entered and some websites need to have the listings manually entered. To answer your second question, NO, these tend to show as active. I have yet to see a "pending" sale on Zillow or Trulia. A Good buyer Realtor who pays dues to belong to the MLS, can keep you informed up to the minute of sales, pendings, etc. Good luck!
It depends upon your MLS and what arrangements they have made for distribution. Some MLSs have automatic distribution; others do not. For those MLSs which distribute listings, the agent has the ability to opt-out of the distribution.
Most MLSs across the country automatically feed listings to Realtor.com. There are a few which do not; those are the exception.
Trulia has direct feed arrangements with some MLSs, and many brokerages...particularly the larger ones. Trulia also acquires listing data from individual agents who can manually submit the information.
Many agents work with companies that will distribute the listings to various sites. I own a boutique brokerage. We direct data feed to a few sites, and use a service to distribute property info to the sites which have lower traffic reports.
Pending data reports can be slowly updated. Any property showing as active should be verified as active. Most MLSs update in real time, and agents can verify that status with their respective MLS. Still, even in MLS, sometimes the data is not reported timely. MLSs generally have strict rules about timely reporting, so the data integrity in MLSs is very high. Our data feed for the area we service is available to the public and updated in real time. There is probably a Realtor in your area who provides a search site that is updated in real time.