I keep my headers in a separate text file so I can just copy and paste and not spend time trying to remember whether I've covered everything, so this is now the new look:
Feedback: darkhavens @ slashverse.com
Concrit: by email, please
Disclaimer: Not mine, never will be. No harm, no foul, no money made.
I know it looks a lot, but it covers everything anyone needs to know, and headers I don't need for a particular post are easily deleted.
ETA: As spikedluv has correctly pointed out, there's no real need to add an extra header. You could simply change your 'Feedback' header to read 'Feedback and Concrit'.
(I blame my headcold. I've shaken most of my braincells loose.)