The reason this site doesn't need it is because there is no information worth taking. So, people who hack aren't typically going to waste their time other than to troll the site.
In terms of passwords, it is wise to use a unique password for every site you visit -- one could even use a password manager like last pass to make this, well, manageable. But, at minimum, for sites like these you should use password that only applies to unimportant sites -- don't use your bank login password or anything important like that (obviously).