In an announcement made on the Google Developers’ blog, they recently announced changes to their terms of use for the free map API that many IDX Vendors and Brokers are using.

Google announced that they will begin delivering advertising inside map imagery. They will also begin limiting the number of times a free map can be displayed. This causes big potential headaches for IDX providers and Brokerages alike.

First, many MLS’s don’t allow advertising to be displayed in or around their IDX data. Literally overnight, thousands may find their solution out of compliance as a result causing a mad dash to either upgrade to Google Maps Premier API or find another solution like Bing Maps or Map Quest.

Second, brokers might find themselves inadvertently providing free advertising space for their competitors inside their own listings. Software vendors were notified that they have 90 days before ads begin appearing sometime in July.

While it’s probably not a game changer for the bigger players who can afford the $10,000 a year Google Premier starting fees, this will definitely leave a lot of people scratching their head wondering what to do next.