Collaboration Mash Up is an online meeting solution that provides an economical and easy to use alternative to traditional in-person meetings by allowing users to create conferences, upload and share presentations, chat, and use a whiteboard, saving time and money compared to traveling for meetings. The system is built using LAMP technologies and supports features like user registration and profiles, uploading images and videos, creating conferences, adding users to conferences, sharing and viewing presentations, multiple chat rooms, and private messaging. It integrates with APIs from SlideShare, Google Maps, Google Search, and YouTube.