We used to publish notices for our class on a WhatsApp group but those messages used to get lost in other WhatsApp noise ("Good morning" messages). This oneway notification from iLookOuts helps in getting the attention. It used to take a lot of time to add members to our group now people manage their own subscriptions. Also, even unknown people subscribe once they get the link from someone else. Also, the biggest issue was, members used to see each other's number. iLookOuts takes care of these issues plus iLookOuts sends brief information about me to my subscribers so I get some free marketing done.