Again, I do not know if Zip incorporates other listings outside the MLS. I think a great experiment would be that the next time you see a listing on Zip that is not on the MLS please post it. That way we can see if it is or was an MLS listing that was just outdated.
Great line about spell checkers.
Also my query about the differences in the Zip inventory for San Diego verses the MLS number is just that, a query. I am not claiming either one to be right or wrong, but the engineer in my always likes to know exactly where the data is coming from and how it was compiled. I know how the MLS data is originated, and as Jim and sdr pointed out, in the recent past they did see listings either disappear or the total number of listings was off.
I am not sure of the logistics of how MLS databases are accessed by the third parties. How many servers are involved, how big the pipes are etc…
Anyways, please next time you see a Zip listing that you do not think is on the MLS, post it on a new post so it gets my immediate attention and I will try to look it up. Maybe we can start to find out the root causes for the problems.
