What Am I Riddles

Question: You see us everyday, but you never see us together. We appear everywhere but never are we together at the same place. Who are we?

Question: I sit high glowing and watch the world go by, without me everything would seem dull and dangerous. What am i?

Question: I can be seen, I can be not. Thanks to me, you'll fall in love. I mostly am sweet, but once I were sour. You can receive me, you can't just buy me. You only can send me, or simply share me. What Could I be?

Question: What has a head yet it never weeps, has a bed but never sleeps, can run but can not walks, and has a bank but not a cent to its name?

Question: The more places I be, the less you can see.

What am I?