It's only for San Francisco right now, but would love the wider HN community's feedback as well. Is this something you'd find helpful? Worth paying for?
http://www.sticket.net
Marketing: You aren't selling a "Parking Ticket Reminder/Payer", you are selling a system that ensures your customers will _never pay a parking ticket late again_. Benefits, not features. Focusing your marketing message not only helps increase conversion, it also forces you to outline who your customers are. In this case it's obvious - people who get lots of parking tickets. Write your copy to those people!
Idea: definitely interesting. I know a handful of people who would uses this -today-. Also, thank you for thinking about revenue up front! Not enough people do this.
Edit: I do agree that it could possibly be a bit misleading, but the idea of putting a flyer on cars in areas where there is notorious ticketing could potentially get your product in front of real customers.
Back in college (again in Cambridge, MA), a resident parking violation was $10, and garage parking in Harvard Sq for the evening was $14. Guess how hard it was for the residents to use their resident parking spots... (They've since raised it signficantly.)
So yeah, it can be, particularly when convenience is figured in.
Parking fees are one thing that put me off the Ruby on Rails startups in the city :-)
I like the word sticket, but I don't like the ellipses afterward. It sounds weird in my head with that pause. The other thing is that maybe the "to the man" part should match the S (because you add both of those parts onto the word "Ticket").
* Would I find it helpful? -- Yes.
* Would I pay for it? -- No (with a "perhaps yes" if the charge was per ticket, and relatively small)
And I am terrible with design, but it seems to me that you need to work on the UI a bit.
re: pay for it -- currently the email reminders are free, but if the user wants their tickets automatically paid it's a per ticket fee (like you suggested) of $5.