Cookies
The website uses "cookies", which are text files that are stored on your computer, mobile phone etc. similarly for the purpose of recognizing it, remembering settings, performing statistics and targeting ads. However, cookies cannot contain harmful code such as virus.
It is possible for you to delete or block cookies. You can do that by following this guide: http://minecookies.org/cookiehandling
If you follow the instructions and delete or block cookies, the ads you see will only become less relevant to you, while they will appear more frequently. At the same time, you can also risk that the website does not function optimally, and that there is content that you cannot access.