'Get a sequence of status messages representing the 20 most recent
replies (status updates prefixed with @username) to the authenticating
user.
Args:
page:
since:
Narrows the returned results to just those statuses created
after the specified HTTP-formatted date. [optional]
since_id:
Returns only public statuses with an ID greater than (that is,
more recent than) the specified ID. [Optional]
Returns:
A sequence of twitter.Status instances, one for each reply to the user.'

def GetReplies(self, since=None, since_id=None, page=None):

    url = (TWITTER_API_ROOT + 'statuses/replies.json')
    if (not self._username):
        raise TwitterError('The    twitter.Api    instance    must    be    authenticated.')
    parameters = {}
    if since:
        parameters['since'] = since
    if since_id:
        parameters['since_id'] = since_id
    if page:
        parameters['page'] = page
    json = self._FetchUrl(url, parameters=parameters)
    data = simplejson.loads(json)
    self._CheckForTwitterError(data)
    return [Status.NewFromJsonDict(x) for x in data]
