):https://wasipaid.com/
- It is as simple as it could make it. There is no registration or accounts. You simply have to provide a ripple and an email address.
- You can watch any Ripple address, whether it belongs to you or someone else.
- I've put quite a lot of effort into making sure this works as reliably as possible, without notifications being lost, so that it may be used for business applications.
- I'm charging $1 as a nominal one-time setup fee. You will pay this via Ripple (I am currently accepting Bitstamp USD)
If there is interest, I'd like to extend this to support url callbacks, which would make it easy to do shopping cart integrations etc. to get a live payment status update. SMS notifications is also an option, as are monitoring other types of transactions, like trust lines or market orders.