I use a number of different cookies on my site. If you do not know what cookies are, or how to control or delete them, then I recommend you visit http://www.aboutcookies.org for detailed guidance.
The list below describe the cookies I use on this site and what I use them for. Currently I operate an 'implied consent' policy which means that we assume you are happy with this usage. If you are not happy, then you should either not use this site, or you should delete the cookies having visited the site, or you should browse the site using your browser's anonymous usage setting (called "Incognito" in Chrome, "InPrivate" for Internet Explorer, "Private Browsing" in Firefox and Safari etc.)
These are cookies that are set by this website directly.
More information on session cookies and what they are used for at http://www.allaboutcookies.org/cookies/session-cookies-used-for.html
These are cookies set on your machine by external websites whose services can be used on this site. Cookies of this type are the sharing buttons across my site allow visitors to share content onto social networks. Cookies can be set by LinkedIn, Twitter, Facebook, Google+ and Pinterest for example. In order to implement these buttons, and connect them to the relevant social networks and external sites, there are scripts from domains outside of our website. You should be aware that these sites are likely to be collecting information about what you are doing all around the internet, including on this website.
You should check the respective policies of each of these sites to see how exactly they use your information and to find out how to opt out, or delete, such information.