Whether you create a personal CV site (like my site here) or use LinkedIn, be VERY strategic on who you ask for recommendations. Get a true blend of people you reported to, people that reported to you, people you were peer to and key business influencers. Ask folks for detailed thoughts on working with you, not general platitudes.
If you're in marketing, creativty is the "unspoken" testomonial. Don't let LinkedIn be your style.