Uses a [deprecated?] Google API to search for your query and returns URL of the first result. I use this with TextExpander to quickly put in URLs of services I'm mentioning in chats, emails or blog posts.

google_search.py

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

import requests
import json
import sys

def get_search_results(query):
    url = "http://ajax.googleapis.com/ajax/services/search/web"
    payload = dict(
        v='1.0',
        rsz='large',
        q=query,
    )
    r = requests.get(url, params=payload)
    return json.loads(r.text)

r = get_search_results(' '.join(sys.argv[1:]))
print r['responseData']['results'][0]['url']