Here is how Qmee works: You install their app in your browser, search with Google, Bing, Amazon or Ebay and this small little, non intrusive row of advertisements pops up on the left side. That is assuming that you don't have any ad blockers running at the time. You click on one of the ads and earn. How much you earn for each ad will vary, but that money builds up pretty quick.
I'm guessing they have no minimum payout either. For experimental purposes I went ahead and cashed out at 49 cents and it was sent to my Paypal instantly. Proof can be seen below. I don't want to spend all this time working up to some big amount only to discover I've wasted time. Thankfully that's not the case here.
Now, you're not going to see ads every time you search. It's pretty random. According to Qmee, you will only see them when they feel they have something "relevant" to show you.
Sorry, but you must be a resident of the United Kingdom or the United States in order to earn from this program.