A short note:
picochess.com is using https (Hyper Text Transfer Protocol Secure) now!
Here is what for example google saying about why you should use https:
HTTPS helps prevent intruders from tampering with the communications between your websites and your users’ browsers. Intruders include intentionally malicious attackers, and legitimate but intrusive companies, such as ISPs or hotels that inject ads into pages.
As a side effect your entered user data is also secured. Welcome to the future 😉