I've worked out a way to automatically cross-post to Facebook, Twitter, and LiveJournal from Google Plus. This allows me to make ONE post to Google Plus, and have it go automatically to almost all of my other social media. You can throw in LinkedIn as well, incidentally; I didn't mention it initially because I don't use it.
The only thing that's left out of the mix is, sadly, Dreamwidth.
Anyway, here's how it's done:
- You'll need a Google Plus account.
- Set up a Friends+Me account. Their site is at http://www.friendsplus.me/ . The accounts are free.
- On Friends+Me, link your Facebook, Twitter, and/or LinkedIn accounts to your Google Plus account. You can also link Google Pages (i.e. communities) to other accounts, apparently.
- When you post publicly to Google Plus, include a hashtag in your post. Hashtag t (i.e. #t) reposts it to Twitter, f reposts it to Facebook, l (that is, "L") reposts it to LinkedIn. You can combine them in any order, so #flt would repost to all three.
- If your LiveJournal is set up to aggregate and repost your Tweets, all G+ posts which were reposted to Twitter will appear in your daily 12pm Twitter aggregation on LiveJournal.
It's that easy! Once you've set it up, all you have to do is include the proper hashtags in your public G+ posts. There's nothing else to do.
- Your LJ reposts are in the form of Tweets, i.e. a collection of one-liners. However, they each come with a link to the full-length original on G+.
- Formatting doesn't carry over.
- The LJ reposts are done at 12pm. They are, therefore, not timely.
- Dreamwidth can't get the posts at all, as far as I can figure.
- There is no way to commingle comments and responses that you receive to the various copies on different social media.
All that said, it's still a huge improvement!
Almost forgot: you could, in fact, re-import your LiveJournal into Dreamwidth, assuming that you have both. However, as far as I can tell there is no way to automate this, so you'd have to actually go and DO it every so often. I'm also not entirely sanguine about re-importing. Dreamwidth says it won't duplicate posts, but it's apparently a big process that Dreamwidth "schedules", so doing it on a daily basis is probably not a good thing for DW.
Just to be clear, once you've set things up the chain of reposting is:
G+ > Facebook/Twitter/LinkedIn
Twitter > LiveJournal