In the USA the Federal Trade Commission (FTC) passed a law in December 1, 2009, that bloggers must disclose whenever there could be hidden interests or unspoken biases related to recommendations.
While I make most of my money from consulting and coaching, I also make money in other ways.
So per the FTC rules, if I interview someone and they pay for lunch, I would need to disclose this. Same goes if I use an Amazon link that pays me 8 cents instead of an Amazon link that pays me zip. If someone gives me a cool t-shirt with a logo and I wear it in a photo, same deal. Disclaimers all over the place. This would be tedious for me and even more tedious for you, my readers. To cover myself and preserve your experience, please assume that, for every link, products I use, and businesses I recommend, any or all of the following apply: