Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Buy NIS 2003 For the Ad Blocking Feature Alone

This is a good product, but the 2003 line is better. NortonInternet Security 2003 contains an OUTSTANDING ad blockingfeature. After installation, I visited numerous sites which hadpreviously dumped loads of pop-up and pop-under ad windows andflash-based ads on my screen, but now -- POOF -- no more trash,with no discernable negative effects on web page loading. Plusad banners are effectively eliminated--so all you get is the webpage you want. After a week of intensive use, I have yet to finda problem with this software. I find it difficult to praisethis product enough--it delivers every feature smoothly andefficiently, as advertised. I have it installed on my computeralong with Norton Cleansweep--no conflicts or flaws noted.