The document discusses various strategies for market entry by new and existing firms. It describes first movers as firms that enter the market first to take advantage of being the sole providers initially, but need to advertise aggressively to build brand awareness and prevent new competitors. Alliances allow new firms to partner with established companies, while fast followers use their existing brand names to expand into new markets. Brand extension involves using an existing brand across online and offline stores. The document also outlines techniques for electronic customer relationship management (e-CRM) like permission marketing, affiliate marketing, and viral marketing.