Semicolon as URL query separator

Question

Although it is strongly recommended (W3C source, via Wikipedia) for web servers to support semicolon as a separator of URL query items (in addition to ampersand), it does no

Answer 1

As long as your HTTP server, and your server-side application, accept semicolons as separators, you should be good to go. I cannot see any drawbacks. As you said, the W3C spec is on your side:

We recommend that HTTP server implementors, and in particular, CGI implementors support the use of ";" in place of "&" to save authors the trouble of escaping "&" characters in this manner.