why don't they just join DRK instead... not need another coin never heard of shadowcoin before
The proposal merges the two coins and they'll keep whatever stake they had, but in Darkcoin instead. It's the first "coin-merge" to ever happen in crypto.
Hopefully this is not intended at a 1 to 1 ratio?
No, there's a conversation rate between ShadowCash/DRK to keep the same value.