Depends on whether either party has signed it. The document may be used as evidence of an agreement that was attempting to be finalized even if neither party has signed it. If only one side has...
It depends on the country and in the USA, it depends on the state. If you hold yourself out to be husband and wife in some states, your "common law" marriage can be legally recognized by a court....
Only if the notary is a really close friend or family member who can vouch for the person's signature.Another View: Any document is "legal" unless until it's authenticity is called into question. If...
You are a witness to the signing of a signature on the document and nothing else, (unless it is stated that you are a witness to something else involved with the legal matter directly above where you...