C# + Google Searches

  public class SearchResult
  {
    public string url;
    public string title;
    public string content;
    public FindingEngine engine;
 
    public enum FindingEngine { google, bing, google_and_bing };
 
    public SearchResult(string url, string title, string content, FindingEngine engine)
    {
      this.url = url;
      this.title = title;
      this.content = content;
      this.engine = engine;
    }
  }

    public static List<SearchResult> GoogleSearch(string search_expression, 
      Dictionary<string, object> stats_dict)
    {
      var url_template = "ajax.googleapisDOTCOM/ajax/services/search/web?v=1.0&rsz=large \ 
        &safe=active&q={0}&start={1}";
      Uri search_url;
      var results_list = new List<SearchResult>();
      int[] offsets = { 0, 8, 16, 24, 32, 40, 48 };
      foreach (var offset in offsets)
      {
        search_url = new Uri(string.Format(url_template, search_expression, offset));
 
        var page = new WebClient().DownloadString(search_url);
 
        JObject o = (JObject)JsonConvert.DeserializeObject(page);
 
        var results_query =
          from result in o["responseData"]["results"].Children()
          select new SearchResult(
              url: result.Value<string>("url").ToString(),
              title: result.Value<string>("title").ToString(),
              content: result.Value<string>("content").ToString(),
              engine: SearchResult.FindingEngine.google
              );
 
        foreach (var result in results_query)
          results_list.Add(result);
      }
 
      return results_list;
    }

        private List<string> BuildCompetitorList(string _Keyword)
        {
            string _Result;
            using (WebClient _Client = new WebClient())
            {
                _Result = _Client.DownloadString(new Uri(String.Format("[URL]http://www.google.com/search?q={0[/URL]}", _Keyword)));
            }
            List<string> _Competitors = new List<string>();
            MatchCollection links = Regex.Matches(_Result, "<a.*?href=\"(.*?)\".*?>(.*?)</a>");
            foreach (Match match in links)
            {
                if (match.Value.Contains("class=l"))
                {
                    string[] _Url = match.Value.Split('"');
                    _Competitors.Add(_Url[1]);
                }
            }
            return _Competitors;
        }
[SIZE=2][/SIZE]

def params(qry, num=100, start=0):
    params = DataDict(
        q     = '', 
        hl    = 'en',
        num   = '10',
        lr    = '', 
        ft    = 'i',
        cr    = '', 
        safe  = 'images',
        start = '', 
        btnG  = 'Search',
        )   
    params.q = qry 
    if num == 10: 
        params.pop('num')
    else:
        params.num = num 
        params.pop('btnG')
    if start == 0:
        params.pop('start')
    else:
        params.start = start
        params['sa'] = 'N' 
    return params