I came across an extension that makes blocking cookies by default in Chrome much easier. Setting to block all cookies and third party cookies (not sure if that makes a difference) and this extension with a click creates an allow exception within Chrome. It doesn't set a wildcard so for some domains such as Google you have to manually create a wildcard - Google goes nuts when setting an allow exception using this extension. https://chrome.google.com/webstore/detail/disable-cookies/lkmjmficaoifggpfapbffkggecbleang This will also work in reverse if you have cookies allowed by default however the cookie is still set. Just thought I'd share this.
