if i can just bitinstant for $3.95 instead of loseing on every otc transaction to build rep, wheres the bonus and value of the otc rating?
If you are happy with commercial offerings and don't need to do any over-the-counter (OTC) trading, then a good OTC trust history doesn't help or hurt you.
Now let's say you happened to notice that a person nearby to you is selling coins at the spot rates. But that person has no trust history. Is that person scheming to get you to send first and then run off with the cash? If the person has a good trust history, you can know that's probably not going to happen.
This especially comes into play when shipping something. Sure the tracking code can show that a package was delivered, but when the recipient claims it was an empty box, the sender can't prove it wasn't sent that way and the recipient can't prove it was truly received that way. Because of this risk, the shipper might not even want to risk getting an unwarranted negative from a shady buyer and instead the shipper might simply reject any buyer that doesn't have a good trust history. So essentially, building a WoT history now gives more opportunity down the road.
It all matters if you think you'll be trading with parties you haven't already transacted with and who you might not have any other reason to trust.