Follow/UnFollow Records from your Visualforce Page

On observing standard salesforce pages like "All Contacts" view, we note a column called "Action" containing three actions namely,
1. Editing a record
2. Deleteing a record
3. Following or Unfollowing a record as shown below




I have demonstrated 1 and 2 in my previous posts.


Following/Unfollowing a record can be made possible using the tag <chatter:follow> 

The code snippet will be something like,

<apex:pageBlockTable value="{!Contacts}" var="con">

          <chatter:follow entityId="{!con.Id}"/>

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.

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</apex:pageBlockTable >