Reasons what this accomplishes:
If it is free or cheap it's more likely to be on phones.
It allows more open connection, but in a slower form than SIC and could maybe be accessed even when out of sicnal, allowing for non-mostly-secure uses (like gridmail messaging) to still be relevant with sicnal and grid terms.
It is easy back referenced, unlike SIC and could lead to a more true 'social media' experience I think The Feed is going for.
It allows integration into the normal moo window, rather than accessing the browser. (which is cool, I love it, but night be cumbersome for some)
Hiccups to be considered:
Most of The Grid works off of Grid Accounts. That means to sign into The Feed on your phone, you'd need to have one.
Players may own more than one account and want to access The Feed from another account, so an option for switch may need to be considered.
Would you sign in every use of the app or would it be one and done? If someone dipped your phone, could they post ln the feed as you?