[daxelrod]

I use something similar, Invisible Hand. http://www.getinvisiblehand.com/

I haven't had a chance to check out Buy Happy yet, but it seems to me that displaying competing prices on product pages rather than when adding to cart might be a better experience. I use price as one of the deciding factors on whether to buy, and there have been a few times where the lower price that Invisible Hand found convinced me to actually buy a product.

Perhaps both approaches are useful.

[stevesearer]

Another app that uses the cart method is http://www.shopgeniusapp.com/

The reason the cart method is powerful is because shipping can be compared (FS on $X+) as well as promo codes or other cart-based deals.

[SquareWheel]

I would sure like to see one of these extensions that doesn't use affiliate links. I often want to use specific affiliates to support organizations like the EFF or Child's Play charity.

Not trying to be trollish, but I genuinely dislike this sort of monetizing and wish these extensions were at least more upfront about it.

[gk1]

> I genuinely dislike this sort of monetizing and wish these extensions were at least more upfront about it.

Do you have a reason for feeling this way, aside from not wanting someone else to earn money from your action?

They are providing you with a service that saves you money, so I don't understand the hesitation.

[Domenic_S]

What other reason is needed? Some of us intentionally use affiliate links from a person or cause we care about, and would like to know when the affiliat-izing changes.

[patmcc]

>>>and wish these extensions were at least more upfront about it

It's the third item on their FAQ (http://www.getinvisiblehand.com/faq). That's hardly hidden. I don't even use these services, but it seems like a reasonable way to make money.

[giarc]

How else would they make money?

[ericn]

Good point. We're trying out the cart because we don't see many competitors there yet. Plus we have some more ideas for using the cart in the future. Stay tuned!