What is this ground (picture included)

[archenemy236]

This ground here wasn't snugged up whatsoever ever should I be connecting it?

http://imgur.com/oEpKX

[Gordoskin]

OT but i used a scrunge (its for ceramic stove tops) to clean up my fuel rail, shines like chrome now

[bignate]

This ground here wasn't snugged up whatsoever ever should I be connecting it?

http://imgur.com/oEpKX

YES ABSOLUTELY! That is probly the most important ground to have a good clean connection on.

[archenemy236]

Thanks for the replies! I will snugg it today.