What matters more to you? The information a person holds and is able and willing to share or their being part of a certain commercial organization?

Let's take a general topic, such as email security for end users, more precisely, best practices for those using email as a business tool, not caring much about how things happen after they push the send ore receive button. Would you like to receive the advices a messaging solutions expert can give or would you care more about his working for the X company that provides commercial antispam solutions. Is his experience rendered irrelevant by the fact his company sells something when his view is free and stays away from marketing skims?

Yes, he states his position to explain why he has an opinion or recommendation on the subject in the first place. But would you trade relevant tips and trick to keep the ears of your audience clear from hearing a company name?

I am really anxious to hear what you have to say!