For all of us that don't get all of our music illegally, this is awesome. It seems that there's a lot of songs that haven't gotten the treatment yet but if you look at the top ten or Linkin Park, etc it works. http://www.appleinsider.com/articles/10/12/09/apple_rolling_out_90_second_itunes_song_previews.html
I think he means you can hear more of the song now to see if it's worth buying, lol. This only applies to those who actually BUY their music, people.
Exactly . I get itunes cards for gifts sometimes and I don't want them to go to waste. Linkin Park is the only band that I've not used itunes for, and that was just for leaks for CD's that I eventually got anyways. Wow, this is extremely useful when you're browsing an entire album. It's better than having to go to youtube and search each individual song. Even if you end up getting it another way haha.