"Is over optimization bad for a website? Ex. - excessive use of nofollow"

pubsub via webhooks, or "twitter" for your applications

function quux({a, b}) { return a + b; }
quux({a: 5, b: 10});

Page Speed is an open-source Firefox/Firebug Add-on. Webmasters and web developers can use Page Speed to evaluate the performance of their web pages and to get suggestions on how to improve them.

PhoneGap is an open source development tool for building fast, easy mobile apps with JavaScript.

If you’re a web developer who wants to build mobile applications in HTML and JavaScript while still taking advantage of the core features in the iPhone, Android and Blackberry SDKs, PhoneGap is for you.

“I intend to serve exactly the same Universal Internet Explorer 6 CSS for all sites (give or take a little branding here, or a touch of customization there). This will pay dividends for me, reduce wastage for my clients and give end-users a well-designed, well-presented view of what they come for — content.”