Likes UP – Google +1 Requirement: A Gmail Account
To Get Plus.Google.com
– you will need to create a Gmail email account
– you will need an invitation to +1 by someone who is already in the beta test
Summary: Can G+1 Take on the Facebook “Like” Feature” via All Facebook
March 2011: Google announced a new service called +1 ( plus one). I appears that it will compete directly with the Facebook “like button” as a signal for determining what content is “liked” by an individual.
Google’s own advertisements will now include the +1 button, making AdWords just as social as many of Facebook’s own advertising products.