My site was hacked recently, with extra text / code added to the header.php page.
I have corrected this as far as I am aware, but I still have one problem - the Jetpack sharing Facebook button still posts spam for most posts when sharing to Facebook. I am assuming this text is cached somewhere, but I have been unable to work out where.
A sample post: http://www.cyclingcartoons.com/the-cycle-race/ - clicking the Facebook button brings up text about payday loans and other such rubbish.
Any help much appreciated.