Ciao's tendency to stop payment after the first few reviews is really silly. If the intention is to give consumers balanced opinion, you can't stop paying after the third posting (or whatever the criteria are). I find airports and airlines particularly annoying in that respect - many of the reviews are 5+ years old and nobody will write new stuff that actually brings the info up to date because Ciao make the categories non-paying.

Another easn why from a reward perspective Dooyoo has an advantage, apart from SC every category is treated the same.