This can be anything really, but should be made up of links and messages that help your followers do something better, find neat things they appreciate, and thereby bind them to you in a positive way. The more the pattern of linking and messaging follows the interests of your ideal followers, the better your buzz will be when it comes time to ask them to visit your blog or take a look at your latest “thing.”
Variations on the “helpful” theme, depending on the market you service with your website, blog, or store, can include funny, controversial, political, or newsworthy things.
The feeling of following you on Twitter should be like “Hey, here’s something from Darren. He always has good stuff!” And the clicking of the links you share in Twitter, when your followers think this highly of you, becomes second nature. A foregone conclusion. Dare I say, automatic?