How many branches are there of Christianity?

According to a href="http://www.adherents.com/Religions_By_Adherents.html" rel="nofollow"http://www.adherents.com/Religions_By_Ad…/a groups which self-identify as part of Christianity include (but are not limited to): African Independent Churches (AICs), the Aglipayan Church, Amish, Anglicans, Armenian Apostolic, emblies of God; Baptists, Calvary Chapel, Catholics, Christadelphians, Christian Science, the Community of Christ, the Church of Jesus Christ of Latter-day Saints ("Mormons"), Coptic Christians, Eastern Orthodox churches, Ethiopian Orthodox, Evangelicals, Iglesia ni Cristo, Jehovah's Witnesses, the Local Church, Lutherans, Methodists, Monophysites, Nestorians, the New Apostolic Church, Pentecostals, Plymouth Brethren, Presbyterians, the Salvation Army, Seventh-Day Adventists, Shakers, Stone-Campbell churches (Disciples of Christ; Churches of Christ; the "Christian Church and Churches of Christ"; the International Church of Christ); Uniate churches, United Church of Christ/Congregationalists, the Unity Church, Universal Church of the Kingdom of God, Vineyard churches and others.