1) Prepaid Credit Card is it Sharia Compliant? : YES, in general all types of Prepaid Credit Cards comply with Sharia unless if any type of late fees or interest (simple or compound)charged on the card.
2) Hierarchical Marketing: what we mean by hierarchical marketing is the new method of marketing and promotion where companies give percentage when an individual introduce service or product to another, and so forth infinitely each person at higher level of the pyramid get more percentages form transactions take place in the lower levels. This method of marketing is prohibited in Islamic Commercial Law as eventually individuals at the top of the pyramid earn money from individuals at lower levels without any more effort or transactions taking place. Unlike bonuses and incentives given to senior businesses which in anyway are given based on performance (regardless of the level of these bonuses). However this concept of marketing has proven its complete failure despite the all efforts made to promote it.