The problem with just searching the web is this. Some agents do take the extra time to manually input thier listings in multiple websites, however, once they are sold, or a price changes(or any other change for that matter) occurs, they either forget, or just don't take the time to manually make those changes. In essence, what happens is, you are looking at homes you feel very interested in, and they may not even be on the market. On the flip side, if a REALTOR hasn't input into that specific site, you won't even know certain properties exist. Even on some REALTORS websites, they have properties that are no longer for sale. REALTOR.com is good because all properties put into MLS are automatically fed onto the website, however, you are still dealing with a lag, and in many cases, incorrect info. That is why it is important to work with a REALTOR who can keep you on top, and in the know. And it's FREE!!