Google's newest offering Google App Engine lets you use Google's infrastructure for hosting your applications online, the service currently released as a PREVIEW for first 10,000 developers allows participants to use Google's highly scalable fully-integrated application environment with upto 500MB of persistent storage and enough bandwidth and CPU for 5 million monthly page views for free.
While Microsoft is making every effort to get Yahoo! under its hood, Yahoo is having some impressive plans for upcoming days, few days ago Yahoo unveiled preview of their latest unified advertising platform dubbed - "Yahoo AMP (Yahoo Ad Management Platform)", the system greatly simplifies the whole process of buying and selling online ads on company’s expanding partner network. 

Instant messengers are blocked at most work places, school's and universities using sophisticated firewalls and internet censorship applications, however such restrictions can be easily bypassed using web-based messenger services, allowing you to chat using your preferred IM service like Yahoo Messenger, GTalk, AIM or MSN without installing anything on your computer.
While other browsers are fighting for the best browser crown, Apple Safari takes the prize for being the fastest of all, Apple recently released version 3.1 of their fast and sleek browser for Windows, Once installed Apple Safari loads pretty fast and render's webpages faster then any other browser.