Both Ciao and Dooyoo operate in much the same way and pay consumers a small amount to post opinions. Because they are so similar it has become established practice to join both sites and post the same opinion on both sites thereby doubling chances of payment. Whether this is ethical is another question. Some people prefer to to stick to one or the other sites and some post everywhere possible.

Of the two sites Ciao is probably the most popular at the moment, largely because Dooyooo seems to have ongoing technical problems which prevent the opinions being presented professionally.(This the reason I have avoided linking to my dooyoo reviews)

Neither site has any real quality control in evidence. Payments are made regardless of quality and outdated opinions are allowed to remain on the site. The peer review system is supposed to deal with the quality issue but it doesn't work that well because people do not like to rate 'friends' badly.

Worthwhile Reasons to join

• You enjoy giving your opinion, advice or sharing information with other people.
• You enjoy reading other people's opinions.(You can do this without being a member but if you join you can at least rate the opinion and comment)
• You would like to make friends and meet interesting people online in a relatively 'safe' environment.

Some Disadvantages

• The amount of member reads (and thus payment) you receive are very dependent upon the amount of time you are prepared to spend reading other opinions.
• It can be very time consuming and competitive.
• There is no such thing as a free lunch