Amazon’s Kindle application was recently at risk of being removed from the App Store because it contained a link to purchase content outside of Apple’s ecosystem — something Apple no longer allows developers to do under its latest App Store terms. In order to secure its place in the App Store, Amazon issued a last-minute update to its app to remove the link, but in a move that subtly tells Apple where to stick its new rules, Amazon has launched a web-based Kindle reader with support for the iPad. And it’s awesome!

Google’s Gmail web app for the iPhone delivers a nice new update this morning that makes it even more iPhone-friendly, introducing the iOS trademark pull to refresh function, and an enhanced interface.

A native Google Maps application comes built-in to our iOS devices, and while it’s great for accessing maps and getting directions while we’re on the go, it is lacking a few important features. Thankfully, however, Google has just launched an updated Google Maps web app which offers a little extra.

It’s the moment we’ve all been waiting for since the iPad first launched in April 2010. It’s the reason we all stood in line for a day to get our hands on one. And it’s the reason why the iPad has been such an overwhelming success all over the world. Yes, I’m talking about Playboy magazine… which is now available on your tablet.

Twitter announced on its blog yesterday that the company is finally rolling out an update to its mobile web application which will integrate HTML5 and introduce some nice new features, meaning it will no longer suck so much under mobile Safari.