gistfile1.py

import json, urllib2, sys

with open("/usr/share/dict/words") as word_file:
    english_words = set(word.strip().lower() for word in word_file)

def is_word(word):
    return word.lower() in english_words

try:
    since = sys.argv[1]
except:
    since = 0

while True:
    response = urllib2.urlopen('https://api.github.com/repositories?since='+str(since))

    parsed = json.load(response)
    for repo in parsed:
        name = repo['name']
        lastid = str(repo['id'])
        if is_word(name.encode('rot13')):
            print lastid +": "+name

    since = lastid