They have added ten new languages to the portal namely : Hindi, Danish, British English, Finnish, Catalan, Macedonian, Slovakian, Spanish (Mexico ), Spanish (Colombia) and Swedish. As you can see these languages are in Beta, when you try and change language.
To change the language all you have to do is click on the Globe Button on the top right hand corner of the page just besides the Logout button. And you can select the Language from inline page that popups there. You can change the Language directly to Hindi by clicking here Hi5 in Hindi or you can revert back to English For that Matter Complete List of Translations is here:
Americas English Español Español (Argentina) Español (Colombia) -beta Español (México) -beta Português (Brasil)
Europe català -beta Deutsch Dansk -beta Ελληνικά English (GB) -beta Español (España) Suomi -beta Français Italiano Nederlands Português (Portugal) Русский Türkçe
Eastern Europe Česky Magyar Македонски -beta Polski Română Slovenčina -beta Українська
Asia Pacific हिन्दी -beta Bahasa Indonesia 日本語 한국어 Bahasa Melayu ภาษาไทย Tagalog Việt Nam 中文 (简体) 中文（繁體）
Hindi Translation is okay if not absolute good, but that can be expected from English being converted to an Indic Language. Good Move to say the least.LINKS : hi5 | RELATED : Chat in Hindi Using Google Transliteration