Google has added a level of social networking to the Android Market by implementing +1 and Twitter buttons on each app detail page. The +1 button is Google’s version of Facebook’s Like button, which people can click to indicate that they like the page they are viewing. In the case of the Android Market, users see a count of the number of people who clicked the +1 button.
If you wish to share a link to an app in the Android Market with your friends on Twitter, you can click the Tweet button. A tweet is generated telling your friends to check out the app and includes a link back to the Android Market. What will be tweeted is presented to you in a window and you have a chance to edit the message before posting it on Twitter.
Another way that people can see that you liked something is by viewing your +1 clicks on your Google Profile. Google has made the sharing of your +1s on your profile opt-in, so in order for people to view them you will need to go to your profile and make it visible.
While Google has rolled out the +1 button on the Android Market today, you will likely be seeing the button appear on more web sites, just as you have seen the Facebook Like button. The +1 button will certainly appear across Google’s web sites, including YouTube. In comparison to the Facebook Like button, the question is, what is the incentive for web sites to place the +1 button on their pages?
When you click the Facebook Like button, the fact that you like a web page is shared in your Facebook newsfeed, and when your friends see it, they may click the link to open the web page. The result is an increase in traffic to the web page, which makes it nearly a no-brainer for web sites to add the Like button.
Google’s +1 button does not share a link to the page, but rather shows a count of the total number of clicks of the +1 button, which is an indication of the degree to which people like the contents of the page. The result of the Google +1 button clicks will be reader provided ranking of a particular web page that appears in search results, so if a web site has a higher +1 count users will likely pick it over other pages that appear in Google’s search results.