The term "WikiProject" is used for projects created for the purpose of managing a specific family of information within Wikipedia. For example, Wikipedia:WikiProject Economics organises articles related to Economics, including economic terms, theories, and economists.
A WikiProject is a resource to help coordinate and organize article writing. Its attached talk page is a convenient forum for those interested in a particular project. WikiProjects can also have associated Portals.
Some projects, like the Tip of the day project, coordinate internal Wikipedia processes rather than article content directly (though not all of these use the term "WikiProject").
This user exists. This is not claiming that this user is not a bot, sockpuppet, blocked user, or inactive user, it is just stating that this user EXISTS. He/She/It/They would like to point out that the reader must exist as well.