LinkedIn is a great community, but I found one exclusively for traders and investors... http://www.TraderPlanet.com It's free and profiles are available for both individuals and companies. It reminds me of an educational myspace just for the financial industry.
But you are using a screen alias here. Of your many online personas why would anyone believe anything they find in any search? If you wanted to create a completely bogus LinkedIn, facebook, or other social network you could. It is all fantasy. Anyone who searches and acts on that information is standing on very weak ground. To think that these artificial creations somehow help you is in your imagination alone.
Wow I always had it in my mind that a business could be built to do what I described. I remember hearing someone joke that tattoo removal would be the next big growth business. Maybe sites like reputationdefender are right up there, cleaning up your past indiscretions.
Or make Exposed websites about yourself like one character has done like somebody actually cares about them: http://www.timothysykesexposed.com/ I love my privacy and you wouldn't find me on any social networkings.
You need help although I doubt anyone has found a cure for that condition you have called "Loser for Life"