how can i contact an inactive delicious account username?

[Pantone486u]

I want to sync my usernames across social media sites. I need an existing user to surrender their username which they have never added any links in at delicious. How can i legitimately contact them?

[zigmanfraud]

The only way you would be able to contact them is if you know who they were, you could contact the site and ask them about inactive id's , but i doubt they'll give it to you, but they may tell you when they delete the account for inactivity/