fyi if your message has been read there's 2 little check marks at the bottom right of you're message that will be highlighted blue. if it hasn't been read they are grey not highlighted. just found this out stupid me!:) it is good to see if someone read your note, but weren't interested, or just didn't get it in the first place. hope this is a good place for this
Meassage read or not
Yep, this is a new feature in the site, just added few days ago. Glad to see you like it :) It works both on the Inbox and in the Chat box, and as from today it also works on the mobile version.