Twitter?

As for Facebook, you can do the same thing - at least similar. I have set up a page for our company and arranged it so that my Tweets auto post to the Facebook page. Just to clarify, the page for the company is different from a standard Facebook profile. This gives me the opportunity to advertise on Facebook once my business starts moving a little faster.
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prom dresses
dresses for a wedding
bride dresses

 

I've been using Twitter to engage users/advertise a few of our forums.

I've setup an auto-feed so when a new thread is made in certain forums it tweets the thread title and link to the forum post. It's a good way for people to follow new threads that are created quickly on multi-platforms especially mobile!

Also using CoTweet/Hootsuite for tweet scheduling and responding to @replies which is working well. I started Facebook pages also only using to promote site events etc currently.