Yahoo Search has hijacked all my internet browsers (Safari, Firefox). How to remove the adware/malware?
So after downloading Vuze a while back, I wound up with api.mybrowserbar redirects and a bunch of stuff pointing at some thing called Spigot, deterministically finger banging my bandwidth and internet experience in general.

Sorry, this assumes some knowledge of the command line and file structures.

The solution, grep is your friend.

Open Terminal and navigate to /Users/YOUR_COMPUTER_USERNAME/Library/Application Support/Google/Chrome

YOUR_COMPUTER_USERNAME must of course be replaced with your computer username, you can retrieve it by running the whoami command in your terminal.

grep -rnw '.' -e 'spigot'
and
grep -rnw '.' -e 'api.mybrowserbar'

get in there and remove that shit.

In the most annoying case, their genius software made itself the default restart page for whenever chrome unexpectedly crashes. This little tidbit is located deep inside a sort of huge JSON blob at 

/Users/YOUR_COMPUTER_USERNAME/Library/Application Support/Google/Chrome/Default/Preferences