The Danish centre-back was slated by fans on Twitter after being at fault for both West Brom goals - and was then applauded by them for AGREEING with their criticism.
Agger, 28, tweeted: "I agree with most of you. My performance in the last 10 minutes was NOT good enough. It's as simple as that!!!!! But thank you for letting me know."
Agger's admission of guilt was roundly applauded by supporters, in stark contrast to the reaction from Jonjo Shelvey.
The midfielder, 20, was also the target for stick on Twitter from Anfield fans - but had a pop back.
Shelvey tweeted: "Love people giving me stick when half of the people on here haven't got a clue what they are on about #welldone #keyboardwarriors."