To add friends on Swarm, visit your profile and tap the user icon with a "+" sign. You can scan your address book (we just look, we don’t store any of this info!), search Twitter friends, search Facebook friends, and locate friends by name or phone number. You can also add a single friend by going to his/her profile page and tapping 'add friend.'
Accepting/Ignoring a request
To accept a friend request, tap through to the notification you have received to either approve or ignore the friend request. If the request is from someone you do not want to approve as your Swarm friend, tap 'ignore.' The friend will continue to see this as 'pending' when they check up on the status of the request. The person will not be able to invite you to be their Foursquare friend again.
Cancelling a friend request
To cancel a friend request, tap through to the person's profile which you have requested to be friends with, then tap the 'pending' button. From there, you should be able to tap the 'Cancel friend request' button.
Tap through to the friend’s profile page and tap 'Friends.' This will remove the person from your friends list and cause the button to toggle back to ‘Add Friend.’
Friend request notifications
You may only have 1000 friends on Swarm and have up to 500 pending/outstanding friend requests at any given moment.
You can opt to receive notifications via the app or email. You can change these options in your profile settings.
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