Hello

Many blogs nowadays conduct some competitions for giveaways such as you must comment your shared link and by choosing them in a random order is giveaway, they conduct this mostly for increasing traffic.

But the prize of it is like a mobile, paid software etc..

Today I will be saying they all buy a paid product and giveaway it to someone well in 90% of cases it is 

"Wrong"

This is actually by the work of the product they giveaway.

For example Some blog is going to giveaway a paid software it is "free of cost for them".

Actually they wont buy the product.In most of the cases this is happens.

They get a mail from the site(the product they giveaway)saying to giveaway their software for free.

A question might have struck in your mind "why should they ?"

They do this because as they give this for free so that the software is being promoted.

It is being promoted as it is being shared in many social sites and groups.

So I think now you will know why you get something "free"