C# Extension Method - Convert string to it's GUID equivalent

/// <summary>
/// Convert string to it's GUID equivalent.
/// </summary>
/// <param name="value">The value.</param>
/// <returns></returns>
private static Guid ToGuid(this string value)
{
    // Create a new instance of the MD5CryptoServiceProvider object.
    MD5 md5Hasher = MD5.Create();
    // Convert the input string to a byte array and compute the hash.
    byte[] data = md5Hasher.ComputeHash(Encoding.Default.GetBytes(value));
    return new Guid(data);
}