Being friendly

Should I send my MSN email address (via email) to all my classmates, which will give them a choice whether to add me? However, I prefer being given their MSN email addresses and the choice to add them.

I am just not a friendly being. In a class of thirty-three, there were mates I had more interaction with and, those whom I merely exchanged pleasantries. Given that resources (time, energy, effort...) are finite, I have got to make choices.

So, even being friendly is a choice and fate plays a role.