They usually do care if your trades are going in the right direction. This guy wouldnt be getting over 30,000 hits per day if no one cared:
http://www.xtrends.blogspot.com/
Linked-in is a semi-private networking website meaning that you can set your profile to only be viewed by certain people or select what information you want to be put out there. Its much better then facebook or myspace where all of your information is simply out there for the trolls and hooligans on elitetrader to re-post.
All the multiple aliases on elitetrader would never be able to make it to linked-in because you need to get invited to someone's contact list first. If your sitting behind a few terminals at your private residence like a hermit or troll with no life and trading your holy-grail strategy, sure linked-in is not for you.
However, if you know a circle of people then its perfect. You can place your little circle into a semi-private linked-in page.
Myspace, friendster, etc. are good ways to get your name out there too. When someone types in your name on Google, and you know they will, there are 3 things that can happen. 1) Bad stuff shows up like arrests, judgements, you drugged out etc. 2) Nothing shows up which means either you are allergic to the internet or dont want to be found, equally bad as #1
or 3) They find pages that demonstrate a positive healthy personality like a myspace page full of friends and fun pictures.
Quote from Darkhand:
Exactly, no one is going to give a shit about your stupid facebook/myspace/livejournal/linkinprofile bullshit.