If you find TiddlyWiki useful, there are lots of ways you can help assure its future and make it better.
OpenSource projects like TiddlyWiki thrive on the feedback and engagement of users. TiddlyWiki becomes more useful to everyone as more and more people use it. So, if you find TiddlyWiki useful, spread the word. The best possible way to assure its future is for it to become a hundred times more popular than before.