Google plus one or just “like”?

Many people wonder what is the difference between the Facebook “like” button and the “plus one” button offered by Google. Google had improved its services by offering the possibility of bookmarking and measuring the quality of sites, through its latest service Google plus one. This plus one option allows users to mark the best content they have found in a certain domain or field. In this situation, further readers will see that this content is recommended as being of a high quality.