(http://i.imgur.com/mAxZ9.jpg)
If you're gonna go with a screen protector you might as well go with the best. Sure you can buy some cheap no-name brands on Ebay but the gold standard of screen protectors has always been ZAGG's 'Invisible Shield' line. The company has sold over 30 million protectors worldwide, it's made of military grade material that reduces smudges, smears and glare, and has a lifetime replacement warrant for the life of your device. In other words...buy it once and you'll never have to buy it again. Many people swear by these and you can get them either for just the screen for $19.99 or the screen and back of the unit for $29.99. Personally we went for the screen protection since we like to make sure our tablet stays nice and 'perfect' and we really like the slight tactile feel the cover gives the tablet.
Now we know there's an ongoing debate between two firmly entrenched groups; Should you or should you not invest in a screen protector for your Nexus 7 tablet? On one side are those that feel the special Corning 'Fit' Glass is scratch resistant and made to withstand day to day use without chipping, cracking or scratching so why bother? On the other side are those that say while that's all fine and great...it's not scratch 'proof'...just 'resistant'... and accidents can and will happen. Using a screen protector gives you an added measure of security to ensure that your screen stays in perfect shape while having the added benefit of cutting down on some of the glare and fingerprinting of your tablet's glossy screen. It's your call but we can't recommend the 'Invisible Shield' highly enough. If you're gonna go for a screen protector and want the 'best'...this is it. You can find out more at the link below.
ZAGG Invisible Shield for Nexus 7 (http://www.zagg.com/invisibleshield/asus-google-nexus-7-tablet-cases-screen-protectors-covers-skins-shields.php)