I am already bugging all my whatsapp friends :-) though i think nostr would ramp up slow cuz the people are really really saturated with social media .. general vibe is how to leave the ones they already have not to add more

That said , i believe nostr would gradually scale because the sheer number of clients and the communities that each client brings .. for example , i got hooked to yakihonne.com for long posts and ended up joining their community .. thats giving me traction .. i am sure there are lot of people like me who are on nostr because they contribute , or create for a particular client ..