Tweets for the default settings.

def tweets_default(*args):
    """
    Tweets for the default settings.
    """
    query_type = settings.TWITTER_DEFAULT_QUERY_TYPE
    args = (settings.TWITTER_DEFAULT_QUERY,
            settings.TWITTER_DEFAULT_NUM_TWEETS)
    per_user = None
    if query_type == QUERY_TYPE_LIST:
        per_user = 1
    return tweets_for(query_type, args, per_user=per_user)