Viral marketing and viral advertising refer to marketing techniques that use social networks to produce increases in brand and product awareness, marketing leverage, product sales and positive PR through one-to-one contact similar to the process of infection. Messages can be word-of-mouth or delivered online and can take the form of video clips, interactive games, articles, reviews, images, and text messages. The best campaigns eventually 'piggyback' popular social networks like YouTube and Twitter.

The goal in creating successful viral marketing programs is to create trends that are finely tuned and targeted and therefore have a good chance of being spread.

Interweaving can create, develop and deploy a viral marketing campaign to suit any business.