User blog comment:The Lord of the Rings/Protest Against no Capitalization in Chat!/@comment-3424609-20120804223951/@comment-4018164-20120808091115

No one have any written right that says he have the rights to enable Caps Lock, but there is no rule that says you cannot use it Caps Lock either. Actually- there is- but we added it just so users won't add capital letters everywhere when they want ohers to pay attention.

As shrimp said- you can use capital letters, just don't use it everywhere, as it's kinda weird to read.