I think you're aiming at a rather crowded market.<p>I think the reverse startup would sell much better. Instead of advertising to the public, act as a spamfilter for the public. Its about the same tech, but a different customer base.<p>I think $10 week might be pushing it, but I'd spend $10 a month for a social media spamfilter that just passes important stuff on to me. May as well aggregate twitter and FB and G+ and all that into one "relevant" feed for me.<p>For example I want to know if someone important to me dies, gets married, publishes a new book, major life change or illness, that's pretty much it. I don't want to hear about idiotic memes, cat pix, bible verses, political spam, sports, bragging about vacations, pop culture (perhaps with certain exceptions).<p>For about six months I tried to track/log what I got out of facebook vs what it cost. Its fairly expensive, roughly between a prime time TV show addiction and a daily soap opera addiction. I didn't get very much out of it, and nothing that improved my life long term, but it was extremely expensive, like 20-30 hours invested per "important" thing. I'd pay for a decent filter. G+ had a better rate of return and higher actual information flow rate, although it depends what you're looking for...<p>I think you could automate this pretty well. How hard is it to rub posts up against every version of the bible and tag anything that matches 95+ %? How hard is it to rub all the picture up against some stock cat photos and tag 95%+ match as "cat photo". Ditto some other pointless stuff, like any post with sports teams, players, and some random digits is spam. Anything that looks/smells like a news story from any source on news.google.com, tag it I already read it. Here's a OPML of all the RSS feeds I read, you can assume I read everything in that feed, anyone reposting the news I already heard about, just squelch it so I don't have to see the same thing 10 times. Filter all that garbage. On the other hand "I'm getting married next March" well OK pass that one along to me, its probably actually important.<p>I lived a long time without social media, and "missed posts" already have elaborate social procedures around them, so false positive filtering is probably a (edited: smaller) problem than false negative filtering of spam.<p>If no one has started selling this as a product, I'm not sure why (maybe the platforms would be furious at the advertising blocking nature of it?).<p>What happens when two people on social media collide who both use an "agent" or "assistant" service like this is probably a big problem. Two "imposters" trying to carry on like they're both the real deal.