Placing logos of well-known brands who featured your company or use your product have pretty much become standard practice as a marketer. Even people that couldn't...View More tell you what social proof is, follow the herd and use associated logos. Whenever this happens, it means the psychological impact it has on visitors is likely lessening, especially when big brand logos show up on sites that look scammy & out of place. However, that doesn't diminish the fact that the use of popular association will always be powerful. It's a part of our physiology. This is exactly why I like Officevibe's use of company logos as social proof. What makes their usage different? Very simply, their headline & associated testimonials surrounding the logos give them context & make this form of social proof more believable. More than that, the headline "These companies started off with a free trial too" is stated in a way that implies you are going to start a free trial. They are assuming the sale. It's also conveying that these big companies may have been as skeptical as they are, but ended up becoming paying customers. With this one simple headline, they've turbo-charged the power of this piece of social proof.