Looks like their site has moved here: https://payperpost.com/
As for whether it would scare away readers, dunno. Gut reaction is yes, though everything seems very transparent which I suppose helps. Probably depends a lot on what you blog about anyway, and so whether these paid posts fit the theme.
Their default pay would give you $11 for a 200 word post plus link. Unless you are going to try to do loads of these things, is it worth it?
I joined up.
I’ll do it if something comes up, but so far (after 2 months or so) nothing has been appropriate. I have to write about World of Warcraft, History of some African country, why a certain brand of wine is the best, etc.
All for $2 or so, which is not worth me spending time, I’m not interested in it (so assume my audience won’t be either) and will struggle to muster up enthusiasm/bullsh!t about something I know nothing about, and it’ll probably be obvious and out of character for regular readers.
But as I said, no harm in signing up It’s not worth pinning any hopes on finding something appropriate for your site though.