i regularly use facebook and whatsapp. these are cheaper compared to phone calls. if we talk about letters, it will take too long to reach and get a reply back. so whatsapp does well. but letter writing skills are being demolished.
instant contact
yes. to keep updated about our friends and others.
yes. i receive worldwide messages instantly and stay connected with friends and family.
yes, i use facebook messenger and other things like that every day.
yes. you can see pictures as well as videos of our friends and other people.
yes, i do use social media. i can easily send a message with photos, etc., if sent through facebook or messenger apps.