code:
#!/usr/bin/env python
# -*- coding: utf-8 -*-

# призываю лучи поноса


import re
import sys
import gzip
import pydot
import sgmllib
import urllib2

from operator import truth
from cStringIO import StringIO


output_file = 'out.gif'

cookies = dict(
    w3t_w3t_myid='',
    w3t_w3t_key='',
    )

headers = {
    'User-Agent': 'Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.1.11) Gecko/20071204 Ubuntu/7.10 (gutsy) Firefox/2.0.0.11',
    'Accept': 'text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5',
    'Accept-Language': 'en-us,en;q=0.5',
    'Accept-Encoding': 'gzip,deflate',
    'Accept-Charset': 'UTF-8,*',
    'Keep-Alive': '300',
    'Connection': 'keep-alive',
    'Cookie': 'w3t_w3t_myid={w3t_w3t_myid}; w3t_w3t_key={w3t_w3t_key}; w3t_w3t_language=english; w3t_w3t_favicon=shaller1;'.format(**cookies),
    'Cache-Control': 'max-age=0',
    }



class Enumerate(object):
    def __init__(self, names):
        for number, name in enumerate(names.split()):
            setattr(self, name, number)

state = Enumerate('WAIT_TR WAIT_SUBJECTTABLE_TD WAIT_FIRST_B READ_NAME WAIT_FONT_CLASS WAIT_FOR_RE')


class ShitParser(sgmllib.SGMLParser):
    """
    Выявляет направления полета какашек
    """
    
    replyto = re.compile(r'\[re:(.*?)\]')
    shit_in_brackets = re.compile(r'(?:\(.*?\))?(.*)')

    
    def __init__(self, verbose = 0):
        sgmllib.SGMLParser.__init__(self, verbose)
        self.state  = state.WAIT_TR
        self.name = ''
        self.pairs = []
                
    def start_tr(self, attrs):
        if self.state == state.WAIT_TR:
            self.state = state.WAIT_SUBJECTTABLE_TD

    def end_tr(self):
        self.state = state.WAIT_TR

    def start_td(self, attrs):
        if not attrs:
            return
        key, value = attrs[0]
        if self.state == state.WAIT_SUBJECTTABLE_TD and (key,value) == ('class', 'subjecttable'):
            self.state = state.WAIT_FIRST_B


    def end_td(self):
        self.state = state.WAIT_TR

    def start_b(self, attrs):
        if self.state == state.WAIT_FIRST_B:
            self.state = state.READ_NAME

    def end_b(self):
        if self.state == state.READ_NAME:
            self.state = self.WAIT_FONT_CLASS

    def start_font(self, attrs):
        if self.state != state.WAIT_FONT_CLASS:
            return
        if not attrs:
            self.state = state.WAIT_TR
        else:
            key, value = attrs[0]
            if key == 'class' and value == 'small':
                self.state = state.WAIT_FOR_RE

    def handle_data (self, data):
        if self.state == state.READ_NAME:
            match = ShitParser.shit_in_brackets.match(data)
            self.name = unicode(match.group(1), 'cp1251').encode('utf-8')
            self.state = state.WAIT_FONT_CLASS
        elif self.state == state.WAIT_FOR_RE:
            match = ShitParser.replyto.match(data)
            if truth(match):
                self.pairs += [(self.name, unicode(match.group(1), 'cp1251').encode('utf-8'))]
            self.state = state.WAIT_TR

def getTrolledThread(thread_id, board):
    """
    Здесь можно получить только страничку с затролленым тредом, ибо других не бывает
    thread_id - это какая-то хуйня, но не индекс раздела
    board     - тоже хуйня
    """
    url = 'http://forumlocal.ru/showflat.php?Cat=&Board={board}&Number={thread_id}&fullview=2&src=&o=&tistart=all&vc=1&showlite=l&fullview=2'.format(thread_id = thread_id, board = board)
    req      = urllib2.Request (url, None, headers)
    response = urllib2.urlopen(req)
    if 'content-encoding' in response.headers.dict:
        if response.headers.dict['content-encoding'] == 'gzip':
            return gzip.GzipFile('','r',0,StringIO(response.read()))
    return response

parser = ShitParser()
content = getTrolledThread(sys.argv[1], sys.argv[2]).read()
parser.feed(content)
parser.close()

g = pydot.Dot()

for user1, user2 in parser.pairs:
    g.add_edge(pydot.Edge(user1, user2))

g.write_png(output_file)