A number of friends on MSN / hotmail have been messaging me and asking me to use SMS.ac. For anyone using it: You should all check your phone bills and / or read the below warnings before signing up (apparently the signup itself triggers the "recommendation" messages automatically, not entirely unlike BuddyLinks):

Russel Beattie:

I got billed for $25 on my carrier bill from this service a while ago after signing up then getting all this SMS spam constantly for days. I finally went in and shut all the stuff off within a week or so, but at the end of the month it turns out that all those messages were Premium SMS messages! Bastards. Honestly, though, I figured I had missed something during the signup and didn't think to write about the con.

I clicked through the signup process without finally completing it, but unwittingly gave the service access to my MSN IM information. This spammed my whole buddy list with invitations. It was unintuitive to unregister even though I hadn't completed the registration process. Also, I heard from someone that if you don't unregister, the service continues to send invites to people you add to your buddy list. Anyway, I have no idea if the service is interesting, but the the fact that you invite your whole buddylist before you actually try the service and the difficulty and deleting your account makes me skeptical about it.

(via Mobile in Denver)

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