In the near future, it will be common for hostel websites to have built in travel guides.
Why only capture traffic during the booking process when you can imprint your hostel's name on backpackers during their initial destination research? Instead of convincing them to come to your hostel after they have chosen their destination, you can help them choose their destination. A hostel's website could even be used to convince people to go hostelling in the first place.
Here's an example of a hostel that is moving in that direction, using a "piggy back" marketing technique:
(by "piggyback" I mean placing content on 3rd party websites)
Blog software or content management systems make it easy to build online travel guides on your own website.
There is nothing preventing even the most simple hostel website from becoming a major travel resource for backpackers. There is a huge potential waiting to be tapped.