Checked species, Content I follow and My bookmarks are some of the many features HBW Alive makes available to the user to personalize his or her experience while navigating through the website and browsing the contents, by marking the contents that in the way you choose.
To mark a content, locate the small icon behind the content title:
Checked is the way to mark a species a seen or heard (or what you consider), and it's useful to see a world list in the My List page.
Follow is useful if you want to track families or species accounts. When an editor updates this content, you will be notified by e-mail.
Bookmark is a general flag that can be used by the user for any purpose: to save a page as favourite, provisionally mark a species that is being read in order to continue later, etc. Content that can be bookmarked are: families, species and references. You can see a list on your bookmarks page.
All these flags can be enabled from each specific page and listed in the user page.