Blogger provides customisable themes and page layout options with an easy to use interface and useful statistics, but requires a Google account. Wordpress offers many open source themes, customisable design, widgets, good usage data and statistics, and user permissions. Tumblr allows different post types and has a simple social interface, though fewer features than Wordpress. Posterous is very easy to set up but has limited functionality and customization, posting by email with a mobile app.

3. Blogger Customisable themes, and some options for page layout. Easy to use interface (less functionality than Wordpress) Provides a range of useful statistics You need to have/set-up a Google Account (but many people will have one already)

7. Wordpress A lot of open source themes Can customise design with fonts and css sheets (make it look more like your library website if you want to) Can customise blog with widgets Very good usage data and statistics Set-up users with different rights (useful for team blogging)

11. Tumblr Different kinds of post for different media (text, photo, audio, video, quote, link, chat) Simple interface, though fewer features (no stats, no native comments feature) Social/community aspect – like, reblog, follow

15. Posterous Very easy set up Less functionality than other platforms. Can post text and photos by email Limited scope for layout via email posting but additional editing is possible through browser Mobile app allows you to post on the go.