I'm assuming an ecommerce site showing a picture of a product for sale is perfectly fine, like a picture of a tshirt or an art print with a licensed image on it is ok.
If you took the photo or have permission to use it for commercial purposes, can't see any problems at all. I'm guessing some businesses will pinch pics from other sites but that's a bit risky.
Pretty much yes. US law also states hotlinking isn't illegal. However, you may sued for something other than copyright infringement such loss of earnings, but on a forum like this with so little traffic it's extremely doubtful that anyone would bother or that they'd win more than a few pence if they did. Those that are suing for copyright infringement don't care about how few people have seen the image and neither does the law.
It works something like this... Mr image rights company. What we want to do it find all your hot linked,embedded and shared images on forums all over the web and send them some letters asking for some money. Not too much say £750. We'll huff and puff alot and shake the tree and see what falls down. We think to cover costs and make a few quid we'll keep 20p in the £. If it goes really well how about we hire a few paralegals and sue a few folk. Might get some bigger fish. Say 25p in the £ for these. Its a debt collection campaign aimed at frightening the small fish in the pond the likes of the users of this forum into paying up with the minimum of effort. I doubt very much that the likes of twitter,pintrest, facebook will get a letter about copyright infringement. They are at the back of a long line of companies trying to extort a buck by fear. Multiple parking companies. ACS Law which ironically was online copyright/piracy Retail loss prevention. To name but a few. Very rarely do any see the inside of a courtroom. Its even rarer that barring judgements by default that the claimant gers judgement granted. I might change my mind should they start firing bulk claims out but until they do....
If you’re in a public place, you’re in the public view and can be photographed without your consent. It’s a common misconception that a photographer has to have your consent.
There is a lot of bluffing and bulls*** going off too. I donated a photo given to me over 30 years ago of a factory employee staff photo to my local Heritage Society, and they put it on their website with creases folds and all, some time later they received a threatening email from an ebay seller who was selling a cleaned up version with his own watermark across it, the Chair of the Society was considering removing it and bowing to the sellers demands...I recommended that they ask to see his original image (Tbh I recommended that they also just tell him to sod off) to prove it was actually a copy of his image....they never heard another thing. I didn't have a problem with him getting a few quid for my photo if people wished to buy it, what I did have a problem with was his attempt to stop others having a copy for free, which was the basis of my donation.