Some users have recently had their accounts hijacked. It seems that the now defunct EVGA forums might have compromised your password there and seems many are using the same PW here. We would suggest you UPDATE YOUR PASSWORD and TURN ON 2FA for your account here to further secure it. None of the compromised accounts had 2FA turned on.
Once you have enabled 2FA, your account will be updated soon to show a badge, letting other members know that you use 2FA to protect your account. This should be beneficial for everyone that uses FSFT.
Not always true. Flatness is more important than shiny. I have seen super shiny waterblocks appear to be smooth, but not flat, and getting outperformed by a well lapped but not super bling bling block.
How deep is the scratch? If it's really deep, like half a millimeter, it'd be a good idea to lap. Otherwise, a nice coat of arctic Silver should take care of it.