Yes, that should work.
Then to add a new website/type, you could do this:
push( @{ $hoh{$user}{'Website'} }, 'website4');
push( @{ $hoh{$user}{'type'} }, 'type4'};
and to get all websites for a given user:
my @websites = @{ $hoh{$user}{'Website'} };
The syntax looks strange because you're storing an array ref, and have to dereference it.
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