We got completely spammed a week or two ago... hardcore porn sites in lots of different threads... thankfully it was all by the same user so I just deleted them :-)

As Traveler said... if it happens again just drop one us a mail and we'll get it sorted ASAP. With regards to the report link... I'm using the PGD-Dark theme and I have the link... I'm not familiar with SMF so I'm guessing, but could it be a permissions issue Traveler?