Running bitcoind -testnet locally (about 8 connections) at the moment and testing 'sendrawtransaction'.

However, I'm wondering if there's a way to check how many nodes have picked up the transaction?

I've also noticed it takes a while before it gets in the unconfirmed pool on testnet.btclook.com

How does blockchain.info do it with /inv ?

https://blockchain.info/inv/d7524b67ddb9337a1c25fb79224ad124115c032d9075f839ead765c1884796c7

Thanks guys