Do you believe the reviews?

When Bucky was telling me that he needs to buy a new dual amp switch, we started to look online for a reasonably priced switch. He was leaning towards one particular switch because of the compact size and reasonable price, but then he started to read the reviews associated with the switch. Seems that there were only three reviews on the item, and they all cited some issues with the switch. That made me wonder if the reviews were honest reviews, or if the reviews were put on there by a competitor trying to undermine the sale of the item.

When you shop online, do you usually believe the reviews that are on the website?