Ad serving, namely, placing advertisements on websites for others using specialized computer software; Advertising services; Classified advertising services; On-line advertising services for others

Downloadable software programs for allowing consumers to view, post, and respond to classified advertisements, and downloadable software in the nature of a mobile application for allowing consumers to view, post, and respond to classified advertisements

Downloadable software programs for allowing consumers to view, post, and respond to classified advertisements, and downloadable software in the nature of a mobile application for allowing consumers to view, post, and respond to classified advertisements