On Satoshi you can find and add anyone as a Contact. This makes it easy to pay people again without them having to send you their Bitcoin address. Additionally you can also request payment from anyone on Satoshi making it a single click for them to pay you.
How to add Contacts
Go to the Contacts widget on the Home screen
Find the contact that you want to add
They will then be in your contact list and the Add button transforms into a Pay button.
How to pay Contacts
Click the Pay button on the contact you'd like to pay
Enter the amount that you'd like to pay them
Click the Confirm button
Add a message if you'd like to and click Confirm
How to request payment from Contacts
Go to your Contacts profile by clicking on their avatar
Enter the amount that you want to Request
Click the Request button
Viewing Profiles of others on Satoshi
You can request or pay anyone with a single click. Additionally you can view metrics of other users on Satoshi to see their Streak, sats Earned and Rank.