Coppermine Photo Gallery is a easy to install and easy to use photo gallery which can be uploaded to your website, so your visitors can upload their images easily.
It?s very similar to install to phpbb forums, you have to download the file, then upload to your FTP server and then configure it. Configuring it will not take more than five minutes, and if you feel tat you need some help you can watch a tutorial here.
Once you have installed it, all your visitors can upload their pictures as easy as writing in a forum. It has lots of skins so you can add the one that fits best your website style.
What are you waiting for to install it and make your website more interactive?