Do you ever provide feedback to businesses you’ve bought goods or services from online? No? Well you maybe missing out on a backlink or two then.
Take a look at some businesses testimonials/feedback pages, and you’ll find that many, services businesses particularly, provide a link to the website of the people providing feedback.
So next time you’ve had a good experience with a business, drop them a mail with your feedback, and URL, and see if you can get a backlink out of it!