If you're trying to get the comments/upvotes here live on your wordpress site. You might want to checkout the javascript library. You can find it at steemtools.com i think it could handle it.
As for people commenting and upvoting on your actual site. Thats trickier as they would need to use their posting keys and security would become an issue.
Hit up the people in the various dev channels on chat. They should be able to point you in the right direction moreso than I can.
Good luck.
Edit: Oh and for autoposting i think streemian may be able to do that.