Yes you are right, Leuthold & Kostenas is really very big and strong privatdetektiv firm, i have heard many things about them, their work is not limited for nation only they are running this firm at international level.
My current desktop pick is of raghu ram from rodies, nowadays raghu is distributing it’s posters named raghu says online and each poster have a good message in it.
Keyword density means how frequently you use your keyword in a whole page like 5%, 10% etc, normally the keyword density should not exceed more then 7% of overall text.