Everyone is in Twitter these days. Many technical and non technical industries are using the Twitter to have a good interaction with the users. There are publising the most recent news through the Twitter.
Most of the Google services and applications are available in Twitter. Google has published there Twitter account's name in their official blog. I summarize all of them in one place to make it easy for my readers. You can follow these Twitter accounts which are related with Google, and being liked with Google.

twitter.com/Google - Google central account twitter.com/Blogger - Google Blogger fans twitter.com/GoogleCalendar - user tips & updates twitter.com/GoogleImages - news, tips, tricks on Google visual image search twitter.com/GoogleNews - latest headlines via Google News twitter.com/GoogleReader - from Google feed reader team twitter.com/GoogleVoice - updates & info on Google Voice twitter.com/iGoogle - news & notes from Google's personalized homepage twitter.com/GoogleStudents - news of interest to students using Google twitter.com/YouTube - for YouTube fans twitter.com/YouTubeES - en Espanol twitter.com/GoogleAtWork - solutions for IT and workplace productivity twitter.com/GoogleSites - Google Sites updates twitter.com/GoogleToolbar - news & tips from the Toolbar team Geo-related twitter.com/SketchUp - Google SketchUp news twitter.com/3DWH - SketchUp's 3D Warehouse twitter.com/Modelyourtown - 3D modeling to build your favorite places twitter.com/EarthOutreach - Earth & Maps tools for nonprofits & orgs twitter.com/GoogleEarth - updates from the Google Earth team twitter.com/GoogleMaps - uses, tips, mashups twitter.com/GoogleSkyMap -Android app for the night sky Ads-related twitter.com/AdSense - for online publishers twitter.com/AdWordsHelper - looking out for AdWords questions and tech issues twitter.com/AdWordsProSarah - Google Guide for AdWords Help Forum twitter.com/GoogleAnalytics - insights for website effectiveness twitter.com/GoogleAdBuilder - re building display ads twitter.com/GoogleAdManager - info on managing online ads & inventory twitter.com/GoogleAffiliate - info for publishers from Google network advertisers twitter.com/GoogleRetail - for retail advertisers twitter.com/GoogleTVAds - info on our digital system for more measurable TV advertising twitter.com/TechnologyUK - for U.K. tech advertisers twitter.com/UKretail - for U.K. retail advertisers twitter.com/creativesandbox - for advertising agencies twitter.com/InsideAdWordsDE - for German AdWords customers twitter.com/GoogleAgencyDE - for German ad agencies twitter.com/AdSensePT - info for Portuguese-language publishers twitter.com/AdWordsRussia - AdWords news & tips in Russian twitter.com/DentroDeAdWords - Spanish updates from the Inside AdWords blog twitter.com/AdWordsAPI - AdWords API tips Developer & technical twitter.com/GoogleResearch - from our research scientists twitter.com/GoogleWMC - Google Webmaster Central twitter.com/GoogleCode - latest updates for Google developer products twitter.com/GoogleData - Data APIs provide a standard protocol for reading and writing web data twitter.com/app_engine - web apps run on Google infrastructure twitter.com/DataLiberation - our initiative for complete import/export of all data twitter.com/GoogleMapsAPI - about using Google Maps embedded in websites twitter.com/GoogleIO - Google's largest annual developer event Culture, People twitter.com/googletalks - notes from our @Google speaker series twitter.com/googlejobs - the voice of Google recruiters Country or Region twitter.com/googlearabia - news from the Google Arabia Blog twitter.com/googledownunder - Google activities in Australia & New Zealand twitter.com/googlebrasil - News & info for Brasil twitter.com/googlecanada - News & notes from Google Canada twitter.com/GoogleDE - Google in Germany twitter.com/GoogleKorea - News & notes in Korean twitter.com/GoogleLatAm - Latin America (en Espanol) twitter.com/GooglePolicyIt - Notes on Google policy issues in Italy twitter.com/GoogleRussia - Information in Russian on Google products & services