Generally the greatest facebook bombing involves changes such that much of the user's friends don't realise the foul play involved.
An Atomic facebook bombing is similar but involves changing as many things as possible in the most offensive way possible.
Louise Genzby: Just did the biggest shit aye!! Had to chop it up with the spatula to get it to flush!!!
---Reply 1: ewwww gross!!
---Reply 2: TMI!!!
---Reply 3: hahahaa great facebook bombing!!!
example 2: page joins
John Henry just joined the groups "Hot Guys", "Anal is Awesome," and "My Mother is Totally Hot"