If you haven’t heard yet, Apple (Jobs) just announced that Safari will be available to Windows users. This is important for 2 main reasons.
First of all, web developers will be able to test their applications in Safari now, which means they can assure a consistent design across browsers. People won’t have to have a mac to test how their sites look in one.
Second reason is related to the first one. Safari is the browser for the iPhone, which means that Steve Jobs has opened a way for developers to reach it. Not only Apple developers, but any web developer, and they can test their applications in Windows or Mac, they won’t need to buy an iPhone for development purposes.
There are a few “bad” things to take in consideration. Since Safari is now available in any platform, it will get the atttention of hackers, malware, spyware, etc. It is a start point for Mac holes to be exploited. This is also re-ignite the old “IE is unsafe just because it has more users” discussion. Let’s not forget Safari is in the iPhone too, why can’t it be a target? A omnipresent web browser sounds like a nice juice pray for hackers.
Now, on a user level, I don’t think Safari will become a leader, I don’t think it will take a lot of market share from IE o FF. I think it will remain a browser to enable developers to access several platforms, unless you are a mac fanboy trapped in a windows shell.