If you buy your skitto SIM with a promo code, you will get an additional bonus of 1GB with 7 days validity!
What is a promo code?
It's a special code that you can easily generate from here. If you buy your skitto SIM using this code, you'll get additional bonus data!
So, how should you use it?
When you go to buy a skitto SIM, tell the retailer first hand that you have a promo code. Show the promo code SMS to the seller and he will take care of the rest. All you gotta do is enjoy an additional 1GB bonus :D