Not only is it a distraction from your content, it also shows the visitors of your website that you aren’t willing to go that extra mile to give them a better experience.
And on top of that it means that you are simply advertising the stock photo company instead of your own business.
There are some great royalty free stock photo services, which is a great alternative if you aren't prepared to pay out a little for your images.
We've mentioned a few of them in this other blog post. Otherwise paying for un-watermarked, premium photos can really make a difference to how you present your business.
Its always better to get professional photos taken of your actual business. Especially if your business deals with physical visual work, like interior design or has some sort of workshop.
It shows people that you are proud to show off your work and presents a far more genuine and trustworthy image.
We actually offer a professional photography service that you can learn more about here.