How many are tweeters? Once that penny drops and you "get" why twitter is such a massive tool, you'll be awash in twitter love. At least it works that way for most folks.
Many are still very active here on Ryze, also on Facebook and have joined the twitterverse to accent other social media activities. Lot's of traffic and exposure to be had by tweeting your blog entries.
Note even the "tweet" area on the Ryze home page too!
Embrace Ryze, Facebook and include twitter to drive traffic to all your best venues.