soz it this is a dupe but these two things are causing me consternation
1) what is a shared wallet in this context?
https://blockchain.info/api/api_receiveReplace the values as follows
data-shared - Set to true if this transaction should be sent through a shared wallet.
also if you scroll down beyond the php example it has a tickbox "Make Shared?"
2){"error":"Wallets are currently restricted to 5000 transactions"}
http://blockchain.info/api/blockchain_wallet_apisorry what? is that all time or per month/day/hour?