Over the years I own three 🙂 Now I only run just the one forum and my other forum is just not being used. Regards the third! It's no longer with us lol
I own just the one forum and that's plenty for me. I think it's too much to have more than one site and expect it to be successful because there is so much that goes into building it, starting it, advertising it and everything else that you have to put into it.
I've had multiple website projects running at the same time in the past (like 3/4). Now I firmly believe that it's better to focus on one and give it your best. So I just have my image host.