I've built
wordpress plugin for WooCommerce that utilizes blockchain.info API. It worked as described back in December 2012 and then suddenly they (blockchain.info) changed something on the backend.
As a result - you get quick notification of first transfer (with notifications=0): client -> temporary address
But then you'd have to wait for *days* until funds will get to your main merchant address: temporary address -> your wallet address
I explained that here:
http://wordpress.org/support/topic/note-why-payment-notifications-may-be-slowI opened few support tickets with blockchain.info, received one reply and then dead silence. One user of plugin still haven't received payment back after 4 days.
This pisses people off and especially me as a developer of a bitcoin payment solution. I promised people a working solution and they got shit.
People don't care if that's a blockchain.info fault or my fault, but that's not how payments (no matter how open sourced they are) should operate.
So right now I am working on much superior and secure product - Bitcoin Payments version 2.x for Wordpress that will not require any third party services (besides polling blockchains for confirmations). Hence more predictable, reliable and secure (no private keys needed anywhere).
It will utilize Electrum wallet's Master Public Key to securely generate unique addresses to receive payments and funds will automatically be reflected inside merchant's deterministic wallet. It will poll blockchain for notifications automatically and process "Order fullfilled" as soon as desired number of notifications is reached. It could be zero and it could be instant.
In fact I love how blockchain.info immediately "beeps" when I get transfer from MtGox or anywhere.
Anyways, I do believe that the best solution will have the least amount of middlemen (and snoops) to feed and least amount of potentially broken links to support, and working on it.
Stay tuned - soon you'll be able to build cool, professionally looking, secure online stores, supporting Bitcoins as well as any other currencies simultaneously without paying percentages or fees to any middlemen.
Gleb
http://www.bitcoinway.com/