I made Protopub to scratch the itch I think a LOT of us have. I am about a month away from a v1.0, and that's when I'll announce it on HN. Until then, I'm tweaking AI algorithms, fixing UI bugs, and making sure the back-end can handle the more than moderate traffic that HN will send. The few users I get from posts like this are enough to do some basic testing.
Anyway, I have some appreciation for the difficulties you must have encountered, and it doesn't please me but it will please you to know that at least from them you won't be having much competition.
Is it ok to start using your service? (not from an industrial espionage point of view but because it is useful!)
Right now, Protopub is an experiment, but it also serves as a beacon to other likeminded hackers in NYC, where I live, that I am interested in meeting others who want to create unique and technically savvy projects. It has done a good job of doing exactly that so far.
edit: hm, protopub.com proxies all requests ?