I take Serge's point - it is a cowardly act to kick somewhen when they are down, and gutless to make up shit and prosper out of someone else's misfortune.
I also Take Mike's point - there is NOTHING worse than pretend friends with ulterior motives.
Can I just say let he who is without sin be the one to cast the first stone?
Can I again repeat the old proverb:
If you want to know who your real friends are, get yourself a jail sentence