My method:

Blog (hosted by LightCMS) posts to Google+
Share from Google+ to Twitter and/or Facebook (any link shortening is via Twitter and the Facebook just posts my Gplus links by the looks of it.
Twitter auto posts to LinkedIn
Basically all 'shares' link back to Google+ which is sharing from my blog and helping my Google social search-ability

I can download my blog from LightCMS, they are pretty reliable though.

Anyone doing anything similar?