Blogs that have built up a good readership over time hold trust. Readers believe the blogger to be knowledgeable and trust what they say. Students who have achieved this with their blog can make some extra income by writing an ebook around their blog subject so they can sell it to their readers.
Writing an ebook takes a lot of time but most of the information can be taken from previous blog posts with added extras that readers are willing to pay for.
Students can make money from a blog in this way in the short term, but as a long term strategy, banner adverts should be relevant to the blog subject and relevant for readers. If readers become annoyed by the adverts, they will stop reading, traffic will fall and the blogger can no longer command sensible fees for the advertising. The advertising offers could even disappear altogether.
Many bloggers make a good income from their ebooks and try to write more than one over a year. As well as using their own blog to sell the ebooks, other bloggers looking to monetise their blog may be willing to advertise the ebook. Any ebooks they sell earn them a commission from the ebook author. Obviously, communication and good relationships with other bloggers are necessary for this. Whatever the subject matter of a blog, there is usually a 'blogging community' around this. Networking with these bloggers via informal meet-ups, blogging conferences, Facebook groups and other social media is essential for getting other bloggers on board to sell ebooks and other products.