It's not the thing to do when...

[haanhpham1998]

What does it mean by saying 'It's not the thing to do when...' for example:
'It's not the thing to do when/if you want to remain anonymous.'
Please explain.

Thanks in advance. :)

[Raymott]

What does it mean by saying 'It's not the thing to do when...' for example:
'It's not the thing to do when/if you want to remain anonymous.'
Please explain.

Thanks in advance. :)

It means that "it" is not a useful/intelligent/advisable thing to do when/if you want to remain anonymous.
"Signing your correct name to your donation is not the thing to do if you want to remain anonymous."

[Tdol]

Yes- if you do it, you won't remain anonymous.