Mls Web Sites, Do They Work?

Do these MLS web sites work I ask? I currently have 15 propertities listed on such a company in the UK, they have numerous properties for sale in Thailand

In March they have just told me my 15 properties have had over 7000 + views, but not one enquiry, I've asked for an explantantion, but all I get is a load of waffle.

Does anybody know if these MLS sites work generally?

MLS = multi listing web site