Manton writes about a few workflows here the follows it up with the post I’ve linked to.
FWIW I’ve posted to my own site first then passed stuff along to Twitter and Facebook since we released the Social plugin for WordPress back in 2011. Each of my posts has a link to its counterpart on Twitter and Facebook, and reactions on those networks are brought back in as comments on this site. Special handling is done to thread comments based on Twitter’s reply_to property, as well as a retweets, etc. More details about how this works can be found in the blog post I wrote back in January on the Crowd Favorite blog.
When I’m mobile, I’ve found that using the WordPress admin web interface is better for my needs than the iOS app. Mainly because of additional post meta that I utilize on this site.