If we know someone who owns the rights/created a product... and we'd like to write a hub about it. Is it ok to tell them we're planning to write a hub about it and ask them if they'd like to advertise on your hub? Can they contact HP's and go thru the proper channels to do something like this?
Generally writing a review about a product is not illegal and you don't need to obtain the consent of the owner/creator of the product you're reviewing nor do you need to let them know.
Having said that though, one should bear in mind that if you make false claims about the product you're reviewing, you could leave yourself open for slander or defammation actions against you in a court of law.
Just stick to the facts and what you know about the product including your own experiences with it.
I don't know about the advertising part of it, but if the product you're going to be writing about is available for sale at Amazon or eBay, you should definitely include one of those capsules in your hub.
Thank you. Yeah, I actually wanted to contact him first to see if he'd want to advertize on it... (I couldn't make any false claims about it.) It would all be on the up and up... I just didn't know if it was ok to ask him to advertize on it first to give him the opportunity before anyone else could advertize on it.