[butz]

One thing to watch out for, is that on some platforms (those that are not doing correct email account ownership verification) account might get recreated either by accident or not, by a person using your email address. I think it is better just to remove as much personal data as possible, cleanup account and leave it with updated, more secure password.

[ddalex]

If somebody creates an FB account with my email address, I will took it over immediately and remove it.

[3np]

Alternatively: Let them, even click the confirm link for them; increase the noise-to-signal ratio for their tracking, targeting, and profiling.