I wan't to know the reason why people use so much paypal and not moneybookers, liberty reserve etc....
Because paypal is being used by most number of people. It is safe and fast. So obviously people will use paypal.
So the reasons behind using paypal by so many people are paypal is safe, famous, trusted and accepted all over the world.
Actually there are a lot of reason for this. For example,paypal is well more established and many merchant accept it plus its backup by a ebay company.
Money Bookers isn't available in the US, so its never going to reach "BIG" status, paypal is the one used by most people, meaning most people know about it = higher sales. Liberty reserve doesn't have a clean a layout as paypal either.
becoz paypal is known worldwide , it came before MB ,AP , LR etc , so most of the ppl have a/cs in them , PP has got more repu than others and mainly it is trusted by many. P.S , Most sites accept paypal on top of others