Final answer:
Innovative companies are using a new marketing technique by creating membership interest groups on a social networking website.
Step-by-step explanation:
Innovative companies are using a new marketing technique by creating a group on a social networking Web site that interested users can join by becoming members.
These groups, also known as membership interest groups, are organizations that people join to pursue shared interests or because they provide some intangible rewards.
By creating these groups, companies can engage with their target audience, build a sense of community, and promote their products or services in a more targeted and personalized way.