If I am that atypical, then I don't know why everyone wants them, either.
PPC - I still don't think there would be an "urgent" cause to go into the backoffice. PocketRealEstate should be able to serve up whatever listing info you need.
Mapping - I got a demo from and spoke to one of those "neighborhood" listing map providers that give POI in a brochure-style PDF map, but the quality of the map results was a serious issue and the cost of licensing our volume is well into six-figures. I'm in a holding pattern on this front until next Fall.
SPAM - I really wish there were a simple answer. We currently use 6 IPs from 3 separate servers to reduce our points of failure, but it's still a major uphill battle. I have had to sign contracts, agreements, go through phone interviews, and pay for "memberships" to prevent our servers from being blacklisted as much as possible. Still, every once in a while we get flagged somewhere and it's a 2-3 day process to get the domain/IP/user unblocked. My fear is that increasing our volume from 150,000 emails per week to 300,000+ emails per week crosses into a whole new level of blacklist babysitting. e-mail sucks.
-Matt