"NDAs are commonly signed when two companies, individuals, or other entities (such as partnerships, societies, etc.) are considering doing business and need to understand the processes used in each others business for the purpose of evaluating the potential business relationship. NDAs can be "mutual", meaning both parties are restricted in their use of the materials provided, or they can restrict the use of material by a single party."
Sounds like a promising development. More business is always a good thing. Is the appearance of the NDA marker a new development? Wonder if it only happens when you're dealing with a big company