I've looked at the BizXchange service in pretty good detail. I recommend bartering for services on a daily basis.
The catch I see with BizXchange is two-fold: 1) you have to have something to barter. 2) you lose an economy percentage to BizX for the transaction.
What I do is a "high barter" item. 99% of companies can utilize my services and gain benefit. So for me, bartering is almost like printing "free money" and I get a great economy of scale.
BizX doesn't hold much value for my business because of the fact that I can already barter with 99% of businesses if I choose to.
However if you only have something that 10% of businesses barter for.... for instance you do custom kitchen installations and can only barter with restaurant owners- you can actually take the barter system in BizX and get "barter credits" from the restaurant owner which can then be used like cash with other barter users of BizX. That means you could do a custom kitchen install for a restaurant, and then use the credits to purchase printing items from a printer i n the BizX network.
I would generally believe that most businesses would be better off bartering directly and not using the BizX process. Even if I found a company on BizX, I would simply directly deal with them and save myself the % loss.

