Following on from Martin's comment in MDL-29067, it would be great if we could have a block on each user profile page containing a 'Delete all content from this user' button which when clicked would check

1. Whether the first access date/account creation date is less than 1 month ago
2. The number of forum posts, comments and personal messages sent by the user

Re. 1. we'd assume that spammers have a newly created account, so checking the first access date would be a way of safeguarding accidental deletion of content.

If the first access date was more than a month ago, the following message could be displayed:

'The first access date of this account is more than 1 month ago and so the content from this user cannot be deleted.'

If the first access date was less than a month ago, the following message could be displayed:

'You are about to delete

x forum posts
y comments
z personal messages

and block the account of Sidney Spammer.'

with a continue button.

Clicking on the continue button would delete the content, set the account authentication method to 'No login' and add 'Spammer - account blocked' with a date stamp to the description field.

Re. deleting forum posts, an alternative would be to blank them and insert the phrase 'Content removed by a moderator' with a date stamp. This would avoid the problem of orphaned posts (when users have replied to spammers).