The following is how LinkedIn suggests you fix Your Duplicate Account
What do I do if I have a duplicate account?
You may discover you have more than one LinkedIn account. If you get a message that says the email
Networking with LinkedIn
Keys to Being Successful On LinkedIn
Profiles are the Foundation of LinkedIn, they are your electronic by business card providing professional background and experience.
Your Profile can serve as your professional portfolio – linking it back to
Networking – It Might Not Be What You Think It Is
To many people, networking can seem like a daunting process. For some, just the thought of attending a business networking event provokes enough anxiety that they avoid it