http://www.digicelaruba.com/products/product.php?product_display=digichat
Digicel Aruba has...
Digichat
digiCHAT is a new and innovative text based service from Digicel thats easy to use and great fun. digiCHAT allows users chat with up to 30 other users in chat rooms using their Digicel mobile phone.
It is based on a series of commands that are sent as an SMS message and sent to 2428 (CHAT)
more info at link...
http://www.digicelaruba.com/coverage/map_large.php (coverage map)