It seems that WC upload image pb is linked to an API request limit (error 429). An alternative that I tried and that seem to work is to upload to imgur and then post the direct link to the image (right click + copy img address in browser). But the integration is less nice.

Collectionneur d’emotions - 
Tezos tools : https://nftbiker.xyz


Yes probably, I don't think that uploading media is part of the farcaster API, so each client do this their own way ... And as long as a client is capable of automatically show image from url, we will always have alternative solution anyway ;-)

Uploading from Supercast seems to work fine, though. I guess they have a different API?

I love all the creative ways ppl are getting around this 🤌