Development, operation and administration of digital signage systems and digital advertising systems for others, namely, providing advertising space by electronic means and global computer information networks; Professional staffing and recruiting services; Providing employment information; Providing online databases featuring information relating to employers and employees and places of employment; Providing space at a web site for the advertisement of the goods and services of others; Providing a web site featuring on-line classified advertisements posted by users; Providing an on-line searchable database featuring classified ad listings and employment opportunities; Providing on-line employment placement services, namely, matching resumes and potential employers via a global computer network