Searching some real pictures/images from open source

It's amazing and thrilled to try Beta so far. 

To maximize AI power, it could be better to extend/enhance the search function of source from public domain such as internet. Although it's reasonbale to say there must be copyrights matter on that, nobody really claim as there are several sources to get real pictures/images from open search engines such as google, firefox, bins etc. Thank you for your consideration.