Hi,
yes you are right but now Facebook has lot of changes. now you can not spamming like if you send rapidly friend requests 1st Facebook worn you and block you friend request and if you are not stop your spamming behavier then they block your Facebook account. So if you want to make real friends on face book so behave like human and make friends slowly and watch your friend list if they increase the number of friends its mean the other peoples are accepting your request then make communication strong between you and other this behavier is very positive way in your social networking.