For me, it would depend on a variety of factors:
1) Could I set the time for such a message (i.e., morning versus afternoon?)
2) Would text messaging rates apply? (i.e, would I be charged for the text regardless of plan?)
3) Could I set the types of messages I get? (For me, a reminder to exercise would be more useful than a reminder to eat fewer carbs, for example)
4) I know that I personally would prefer an e-mail as opposed to a text!
I think having reminders is great, however, if they're just going to be little tidbits or nothings then it might be a service I don't hang on to much, especially if I'd be charged for it by the phone company
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Terri
Female, 28 years old, 5'4 1/2" tall
Starting weight 1/4/11 = 215.2 lbs.

Weight 9/3/12 = 164.9 (net: -50.3 lbs.)
Current mini-goal: 160 lbs.
Next mini-goal: 150.2 lbs.
<--- Official "Healthy BMI" weight 
Estimated final goal: 130 lbs.
"You don't have to change your life today. You only need to change your day today."