Etiquettes in the Digital world

Today almost every house hold has access to internet and smartphones. Yet even the most polite people lack the basic etiquette's of using these technologies. Being an avid user myself, I find this lack very irritating and so I attempt here to list few habits that one should do instead:

1. The most annoying thing on mobile is crazy ring tones. Keep your ring tones pleasant, something which does not make all eyes move on the direction asking, where the hell this noise is coming.
2. Whenever you get a missed call from a number in your contact list, it is polite to call back.
3. When you call somebody and person is not picking the mobile, do not go on calling every second!!! Unless you are his/her mother, girlfriend or wife.
4. When you receive a message, you should reply back, acknowledging that you have read the message, even if it is short and sweet “OK”. Even dumb computers do it, you are better than them. (Remember that in Whatsapp and Facebook, sender do come to know if you have seen the message or not)
5. On Facebook and twitter, being lazy we mostly click on like to acknowledge the fact that we have seen the post and like it or agree with it. But please do not like post informing tragedies/death etc. I am sure no one likes that someone is dead, but still the post has 20 likes!!! yuck!!