In particular is you happen to login, logout etc. cookies are used to help the site know who you are when browsing the site.
You may note that there is a not "https" at the beginning of the url. Thus, data transfered to and from your browsers are not encrypted. Make sure no sensitive informatino is being submitted to this site.
I have taken steps to ensure that data is kept safe. However it maybe possible for other people to be able to view this data. So again, please don't submit any sensitive information to this site that you would not want another person to see.