Try visiting here:
Snap! Build Your Own Blocks (berkeley.edu)
Bromagosa did not expect a query hacker when making the website.
What does this mean?
a query is things after the ? in a url
What's the problem here? The page shows exactly what you ask it for. You're asking for page "your random string", and that's what the system shows you.
I'm not spending a minute of my scarce development time on trifles like these.
A result of poor understanding of URL query parameters!