Gets rid of all the pop up adverts and you get to feel good about contributing to the forum if you use it and enjoy it, also you get a banner showing you are a supporter.
10 years ago I joined this forum to learn and share in my passion for this hobby. It lead me to interact with some really knowledgeable and interesting people that even lead to me acquiring my most prized laser in my collection from one of the members here. I am happy to donate to support this forum because it adds value to this hobby and provides a community of support and information on all that encompasses it. Helping to grow our hobby and watching new people join in and spreading this passion on is why I am here.