It is if you want to take the risk. Its a low number of eggs that are infected with Salmonella but some ARE. Doesn't matter if the egg is clean or not cracked as the hen is infected so the inside of the egg also is.
Like I said, its rare but you can decide if you want to take the risk.
I still lick the bowl when I make a cake or grab a dab of raw cookie dough..haven't ever been sick from that and I am nearly 65 years old.
No as you can get Salmonella poisoning.
It does not matter if the egg shell is not cracked and "clean."
No egg shell is totally "clean."
Egg shells make great compost for plants after you use the yolk. The calcium of the shell will help feed the plant.
You can buy in the dairy department processed (pasteurized) egg yoke in a carton.
Depends where you get your eggs, British eggs are just not meant raw but organic, fresher eggs are fine. (take not if you have lower immunity, then i'll say do not risk it)