Cause marketing is a marketing strategy in which a company aligns its brand and marketing efforts with a social or environmental cause. The goal of cause marketing is to increase brand awareness, generate sales, and build customer loyalty.

Cause marketing can be altruistic or greedy. Altruistic cause marketing is done for the primary purpose of supporting a cause, with any commercial benefits being secondary. Greedy cause marketing is done primarily for commercial gain, with any social benefits being secondary.

Altruistic cause marketing examples:

* TOMS Shoes: For every pair of shoes sold, TOMS donates a pair of shoes to a child in need.

* Warby Parker: For every pair of glasses sold, Warby Parker provides a pair of glasses to someone in need.

* Product (RED): A portion of the proceeds from sales of RED products goes to the Global Fund to fight AIDS, tuberculosis, and malaria.

Greedy cause marketing examples:

* McDonald's "McDonalds Happy Meal" campaign: McDonalds created this campaign to appeal to children and families. The campaign featured Ronald McDonald and Happy Meal toys, and its primary purpose was to generate sales.

* Coca-Cola's "Share a Coke" campaign: Coca-Cola created this campaign to increase brand awareness and sales. The campaign featured bottles of Coke with popular names printed on them, and it encouraged people to share their bottles with others.

* Pepsi's "Pepsi Refresh Project" campaign: Pepsi created this campaign to generate positive publicity and sales. The campaign allowed people to submit ideas for social change, and Pepsi would donate money to the winning projects.

In conclusion, cause marketing can be either altruistic or greedy. Altruistic cause marketing is done for the primary purpose of supporting a cause, while greedy cause marketing is done primarily for commercial gain.