Helen
A cookie is a small file that certain internet systems write (and usually leave) on your PC. There are some valid reasons for this, for instance if you are using something that requires you to sign on with an account password it may leave a cookie with the time in it so that if you forget to log out your access will expire after a while to stop others using it. This is very important if you use a shared PC. Some systems use them like bits of paper you might make rough notes on if someone was asking you a question over the phone. Then as you make deeper enquiries the system can refer back to see the details you originally gave. Holiday Truths seem to use cookies so that the system knows when you were last logged on. That way new items can be marked with a sunny face.
The problem is that there are other reasons why systems leave cookies and this price fixing idea is one.
If you are using Internet Explorer look under
Tools, then
Internet Options then
Privacy and see what yours is set to. If you are concerned set it to
medium high and if you want even more control, whilst on that option click
advanced then
Overide ... and set the options to
prompt. This will probably get annoying after a while but at least you can see who's leaving them. What really annoys me are systems (or more accurately, their designers) which assume that you will have Cookies set to the level they need and then either fail to work properly without saying anything or give an error message that doesn't tell you the right reason!