Anyone can add (nearly) anything they want to their profile. However, I don't think there's a need or reason to add a specific company field. I imagine many user's would not want to share this information (and unfortunately, some I'm sure do not have a job currently) and I'm not sure how much value it would add. Perhaps you could research a person and their company to determine any bias in regards to a specific answer, but if you're analyzing a situation you should be testing the answers you receive against your situation anyway. Additionally, the voting system should handle a case where a poor solutions, whether they're posted by someone with a vested interest in that solution or not.