Embeddable Voicemail From Webpages to Iphone

My Odeo voicemail no longer works - the feature was apparently removed. A shame, because it allowed visitors to a web page to use an embedded client that leave voicemails for me to retrieve online. Odeo worked well because the person leaving the voicemail didn't need to sign up for anything at all. I could take the resulting MP3 and play it on the air as a request in my progressive rock podcast.

It was sweet. Now it's dead. :-(

I'd like to see a tool that allows me to take this a little further. I don't want to connect voicemail to a phone experience, I want to bypass the phone system altogether and keep it all in the digital realm if possible.

1. Embeddable tool for web pages/blogs that does not require people leaving messages to sign up
2. Use built-in PC microphones to leave voicemails on blogs.
3. Provide voicerecognition transcription or pass on as a digital MP3 file.
4. Retrievable via iPhone (app), iTunes, or regular e-mail client.
5. Not require the exposure of my phone number or e-mail.
6. Allow the caller to add a callback e-mail or number (The retrieval of this response would be the best place to ask for a sign-up if there must be one).