MatrixAdapt | Logiciel de gestion d'Entreprise, Création et référencement des sites web

It seems the world is going mobile, with many people using mobile phones on a daily basis, and a large user base searching on Google’s mobile search page. However, as a webmaster, running a mobile site and tapping into the mobile search audience isn't easy. Mobile sites not only use a different format from normal desktop site, but the management methods and expertise required are also quite different. This results in a variety of new challenges. As a mobile search engineer, it's clear to me that while many mobile sites were designed with mobile viewing in mind, they weren’t designed to be search friendly. I'd like to help ensure that your mobile site is also available for users of mobile search.

Here are troubleshooting tips to help ensure that your site is properly crawled and indexed:

If your web site doesn't show up in the results of a Google mobile search even using the 'site:' operator, it may be that your site has one or both of the following issues:

Googlebot may not be able to find your site
Googlebot, our crawler, must crawl your site before it can be included in our search index. If you just created the site, we may not yet be aware of it. If that's the case, create a Mobile Sitemap and submit it to Google to inform us to the site’s existence. A Mobile Sitemap can be submitted using Google Webmaster Tools, in the same way as with a standard Sitemap.

Googlebot may not be able to access your site
Some mobile sites refuse access to anything but mobile phones, making it impossible for Googlebot to access the site, and therefore making the site unsearchable. Our crawler for mobile sites is "Googlebot-Mobile". If you'd like your site crawled, please allow any User-agent including "Googlebot-Mobile" to access your site. You should also be aware that Google may change its User-agent information at any time without notice, so it is not recommended that you check if the User-agent exactly matches "Googlebot-Mobile" (which is the string used at present). Instead, check whether the User-agent header contains the string "Googlebot-Mobile". You can also use DNS Lookups to verify Googlebot.

Once Googlebot-Mobile crawls your URLs, we then check for whether the URL is viewable on a mobile device. Pages we determine aren't viewable on a mobile phone won't be included in our mobile site index (although they may be included in the regular web index). This determination is based on a variety of factors, one of which is the "DTD (Doc Type Definition)" declaration. Check that your mobile-friendly URLs' DTD declaration is in an appropriate mobile format such as XHTML Mobile or Compact HTML. If it's in a compatible format, the page is eligible for the mobile search index. For more information, see the Mobile Webmaster Guidelines.

If you have any question regarding mobile site, post your question to our Webmaster Help Forum and webmasters around the world as well as we are happy to help you with your problem.

The Webmaster Tools GData API has been updated to allow you to get even more out of Webmaster Tools, such as setting a geographic location or your preferred domain. For those of you that aren't familiar with GData, it's a protocol for reading and writing data on the web. GData makes it very easy to communicate with many Google services, like Webmaster Tools. The Webmaster Tools GData API already allows you to add and verify sites for your account and to submit Sitemaps programmatically. Now you can also access and update site-specific information. This is especially useful if you have a large number of sites. With the Webmaster Tools API, you can perform hundreds of operations in the time that it would take to add and verify a single site through the web interface.
What can I do?
We've included four new features in the API. You can see and update these settings for each site that you have verified. The features are:

• Crawl Rate: You can request that Googlebot crawl your site slower or faster than it normally would (the details can be found in our Help Center article about crawl rate control). If many of your sites are hosted on the same server and you know your server's capacity, you may want to update all sites at the same time. This now a trivial task using the Webmaster Tools GData API.
• Geographic Location: If your site is targeted towards a particular geographic location but your domain doesn't reflect that (for example with a .com domain), you can provide information to help us determine where your target users are located.
• Preferred Domain: You can select which is the canonical domain to use to index your pages. For example, if you have a site like www.example.com, you can set either example.com or www.example.com as the preferred domain to use. This avoids the risk of treating both sites differently.
• Enhanced Image Search: Tools like the Google Image Labeler allow users to tag images in order to improve Image Search results. Now you can opt in or out for all your sites in a breeze using the Webmaster Tools API.

How do I do it?
We provide you with Java code samples for all the current Webmaster Tools API functionality. Here's a sample snippet of code that takes a list of sites and updates the geographic location of all of them:

  // Authenticate against the Webmaster Tools service
  WebmasterToolsService service;
  try {
    service = new WebmasterToolsService("exampleCo-exampleApp-1");
    service.setUserCredentials(USERNAME, PASSWORD);
  } catch (AuthenticationException e) {
    System.out.println("Error while authenticating.");
    return;
  }

  // Read sites and geolocations from your database
  readSitesAndGeolocations(sitesList, geolocationsList);

  // Update all sites
  Iterator sites = sitesList.iterator();
  Iterator geolocations = geolocationsList.iterator();
  while (sites.hasNext() && geolocations.hasNext()) {
    // Create a blank entry and add the updated information
    SitesEntry updateEntry = new SitesEntry();
    updateEntry.setGeolocation(geolocations.next());

    // Get the URL to update the site
    String encodedSiteId = URLEncoder.encode(sites.next(),
        "UTF-8");
    URL siteUrl = new URL(
        "http://www.google.com/webmasters/tools/feeds/sites/"
        + encodedSiteId);

    // Update the site
    service.update(siteUrl, updateEntry);
  }
Where do I get it?
The main page for the Webmaster Tools GData API explains all the details of the API. It has a detailed reference guide and also many code snippets that explain how to use the Java client library, which is available for download. You can find more details about GData and all the different Google APIs in the Google Data API homepage.

Written by Javier Tordable, Software Engineer