LinkedIn, Thanks For The Product Validation
blog.zerply.com
blog.zerply.com
I'll state right now that I have been using LinkedIn for a long time (and have never heard of Zerply), but the OP seems a bit disingenuous since it's pretty obvious he's working there. How about ignoring LinkedIn (who's probably ignoring you or at least too busy to bother) and focus on delighting your customers?
EDIT - I just noticed that one of the other posts on your site is titled "Forget The Competition" ... here's the link if you'd like to read it: http://blog.zerply.com/post/27334086592/forget-the-competiti.... The good news is that I think your site has potential and would sign up if enough of my cohorts were there. Let's see what happens!
But good to hear that you see potential in our product, I'm sure your 'cohorts' will find their way on to Zerply sooner or later :p
At least in this case there's plenty of press that "endorsements" was on Zerply first.
Again, I really like Zerply and highly recommend it for creatives.