many snap examples do not work because they contain incomplete code. it would be good if the list with almost 5000 examples were sorted by topic and cleaned up accordingly. In my opinion, snap is very successful and didactically useful. 
Hi, and thanks!
If you push the big blue "Example Projects" button, you get to
with about 100 examples. If you mean the complete list of published projects
that's beyond our control; it's whatever project some user somewhere decided to publish! Letting kids publish projects is important to building a community of kid programmers. Pretty soon we're going to implement the ability to make comments on projects, so you can tell the programmer of a project if it doesn't work. :~)