In my younger days, I would always drive to the company, before investing. Today, I don't feel like fighting the traffic jams.. Ect..
But I have always gotten great information from the employees, when I went to the companies.
1. Elliott Wave Chart
Most times the employees have no clue where or why their own stock is doing.. They are so wrapped up in the job.
I once got a beta tester, that told me about future Motorola deal the company was working on.. The employee told me they were testing chip currently in several of Motorola phones.
So, its can be done.. Employees do know information.