When Seeking Permission...

How long is a proper time to wait without response from a person whose gauges you are trying to use, before you just assume that their 'freeware' policy is good enough permission?
I've seen this case occur many times from reading other readmes from planes I've downloaded from various sites. I have sent emails, made forum requests,and sent personal messages. It has only been two days so I'm not worried yet, but if after all these attempts at contact, How long should I wait to upload? :-/
Thanx for the response!
I've seen this case occur many times from reading other readmes from planes I've downloaded from various sites. I have sent emails, made forum requests,and sent personal messages. It has only been two days so I'm not worried yet, but if after all these attempts at contact, How long should I wait to upload? :-/
Thanx for the response!
