Hi
Here's a bit about 3G prepaid PAYG internet access in Morocco in 2010 with Maroc Telecom
3G PAYG prepay internet in Morocco
So far pretty reasonable experience, with a few quirks here and there. Competitors are private firms Meditel and Inwi.
Morocco made the jump from "no data with little gprs" to 3G - 3,5G without EDGE in between.
Cheers!