It's the age-old (or more like the "web-old") saying, "You can't believe everything you read on the internet."
I find myself several times a week saying that to my husband. But now that I am a Realtor, I find myself more and more saying the same thing to clients. "But, on Zillow it says that it's worth...But, Trulia said the square footage was... my payments should only be.. etc".
And it isn't only sites like Zillow and Trulia that I'm referring to.
There is so much information out there, and now the majority of the market is searching online first before they contact any real person. Some of that information can be very useful, and I would not be telling the truth if I said I never get on Zillow myself. Back when we were first time home buyers I was constantly scrolling through it and others like Realtor.com, looking for the perfect house.
The issue with those sites though, is that while they seem useful at first, you have to be wary of the accuracy of the information. Sites like that get their information from the MLS system, however others have access to publicly change that information, and often people realize that it is not up to date.
Imagine finding that ab-so-lute-ly P-E-R-F-E-C-T home, only to realize it's actually no longer on the market. That can be very frustrating, trust me. I recommend taking those home search sites and the information they give you with a serious grain of salt. They can be a helpful snapshot, but they often don't paint the whole picture.
That's why it's best to have a real estate expert help you with your home buying search, or even listing your property - they will make sure it's seen on those sites, and also that the information is correct and updated in a timely manner.
So, please, don't believe everything you read on the internet!