Google introduces the indic music search feature under the Google labs. This new feature has made it  faster and easier to  find Hindi music using Google. The music can be searched by artists, albums or songs. Currently in.com, saavn and saregama are the partners in this experiment and thousands of full songs from these partners can be listened to. Currently only Hindi songs are available, but it is soon expected to grow to other languages too. 

I think URL shorteners came into place with twitter. The 160 character limit made posting the long URL's in the tweets difficult. You can use the URL shortener to shorten the URL.
The idea is simple.  Goto  http://goo.gl/ . Sign in with your google account. Then simply enter your long URL there in the text box. Then press 'shorten'. That's it! You get the shortened URL. The coolest part is that the URL is just 10 characters long.
You can also see the traffic to the URL's ie, the number of clicks etc also which is very useful. This can come handy when you place links of your files hosted in the file sharing servers in forms etc. You can see the stats of your file . Some file sharing servers do not provide stats in free accounts.
The main use is you have a shortened URL which can be easily included in tweets.
Other similar services:
www.bit.ly
www.tinyurl.com