Sniffles Markbar is a very simple AddOn. It's minimalistic and useful, too. If you click on the text e.g Skull it will mark your target and send a chat message to your Group or Raid! You can change the Chat Message Text if you want or you can disable Chat Messages. You can drag the Markbar ingame with ALT+Shift+Leftmouse Click.
I couldn't test this addon in a raid or in a group. It should send a Chat Message to your group "if" you're in a group. "If" you're in a Raid it should send a Chat Message to your Raid. Tell me please, if it's bugged.
And please don't delete !Beautycase.
local enablechatmsg = true -- Enable Chat Message?
-- Texts for Icons (Texts are taken from (http://www.wowpedia.org/Raid_Target_Icon))
-- Change the texts/sentences if you don't like mine :)
local skulltext = "Skull = First Target!" -- Text for Chat Message for Skull Mark
local triangletext = "Please, Hex on Triangle!" -- Text for Chat Message for Triangle Mark
local circletext = "Please, Mindcontroll/Shackle on Circle!" -- Text for Chat Message for Circle Mark
local startext = "Please, Sap on Star!" -- Text for Chat Message for Star Mark
local diamondtext = "Banish/Seduce/Banish on Diamond!" -- Text for Chat Message for Diamond Mark
local squaretext = "Icetrap on Square, please!" -- Text for Chat Message for Square Mark
local moontext = "Sheep on Moon!" -- Text for Chat Message for Moon Mark
local crosstext = "Cross = Second Target!" -- Text for Chat Message for Cross Mark
-- Config End
-- Sometimes if you click nothing happens