Auto-Follow Sites in SharePoint 2013

AutoFollowSitesInSharePoint2013.ps1

# Get UserProfile Manager
$site = Get-SPSite -Limit 1
$serviceContext = Get-SPServiceContext($site)
$profileManager = new-object Microsoft.Office.Server.UserProfiles.UserProfileManager($serviceContext)
$profiles = $profileManager.GetEnumerator()
 
# Iterates through all the user profiles
foreach ($profile in $profiles)
{
    $followingManager = New-Object Microsoft.Office.Server.Social.SPSocialFollowingManager($profile)
 
    # Create a new social actor object for the site to follow
    $socialActor = New-Object Microsoft.Office.Server.Social.SPSocialActorInfo
    $socialActor.ContentUri = "http://intranet/sites/important-news-from-corp" # REPLACE THIS WITH YOUR SITE
    $socialActor.ActorType = [Microsoft.Office.Server.Social.SPSocialActorType]::Site
 
    # Follow the mandatory site
    if (!$followingManager.IsFollowed($socialActor))
    {
        $followingManager.Follow($socialActor)
    }
}