Link bait is content created mainly to attract links. A useful guide, a clear piece of research, a handy tool or a sharp opinion can all earn links without you asking for them.

The idea works for blogs because people link to things they find valuable or interesting. The key word is valuable. Content that only pretends to be useful gets read once and forgotten, and it rarely earns links that last.

If you want to try it, pick a topic your audience cares about, say something properly useful, make it easy to read and share, and tell the people most likely to care. Do that regularly and the links add up.