I have just moved my blog to blogger. There is a little weird issue about sharing blogger posts to Google+. My browser is Chrome for Mac Version 23.0.1271.64. My default cookies settings are "Block third-party cookies and site data". NO exceptions. But the "Share" option under the post doen't work with above settings. There's no further hint or dialogue after clicking "Share". The solution is adding some google sites to cookies exceptions, *.blogspot.com *.google.com *.youtube.com or unchecking "Block third-party cookies and site data". And now the "Share" option should work fine.