http://www.wcfcourier.com/news/local/article_e92a056a-f821-11de-bab0-001cc4c002e0.html

Microchurches have been around since New Testament days but have become more popular in the past decade. Though the groups differ widely in their practices, the majority serve less than 100 members, typically don't own the building where they meet, often practice nondenominational evangelism and intentionally offer believers a worship atmosphere unlike that of established churches. Many of the groups wish to remain small and will plant a new congregation if numbers grow too large.