At first glance, this site seemed like a win-win experience. They gave me like ten bucks for joining, so I spent it and forgot about the site.
I was emailed a few weeks later saying someone had given me some "photons" to spend. Um, yes please! But after I logged in I realized those photons (basically cash for just their store) had already expired. Apparently, the second you get any kind of credit it immediately begins to expire.
Yes, I can appreciate that SOMETHING is better than nothing, but if you are trying to GIVE cash so people SPEND cash, don't let it expire so quickly (or at all)!
I also would like to be able to leave feedback for sellers.
Bottom line? I only use the site once or twice a year when I happen to catch an email that I have a $5-$10 credit to my account. Even then, if your credit covers your entire purchase, they take their percentage out of your own pocket (Example: I have a $6 credit and buy a $5 shirt with free shipping. Yardsellr STILL takes between $1-$2 from your credit card, not from your store credit!).