I wanted to point out that you can set up rss feeds to post automatically to your Twitter account. This could be a great way to post articles from XJW blogs and websites. This isn't suitable for everyone, but it could be pretty helpful for some. Twitterfeed.com and dlvr.it are good services for this. Yahoo Pipes is good for merging and editing RSS feeds.
There are also some easy ways to increase your followers, especially if you don't care who you follow. If you just follow people, many will follow back. You can always unfollow those who don't after a week or so. Twiends.com is a great place to go to get extra followers. You earn credits by following people which are used to reward others for following you. I wouldn't recommend using the paid options. The free option works good by itself.