What's hot in web application

I came up with this list, describing what's HOT in web-application software development:

1. Intelligent Searching
Thanks to i-tunes and Amazon, searching is big business, what Amazon gives us is "you may also like this..." while i-tunes gives interactivity of the search result which reacts to what you type in search field. Combine these two with additional wild-card searching what we've seen in most e-commerce website, ie : last item you see, .. etc is a HOT thing.

2. Personalisation
Who doesn't like to personalise things, it is a human nature to give personal touch to what we have. It reminds me of nokia 5 series with interchangeable covers which was very popular in the 90s. Incorporate this into any web-based application then it is a HOT thing.

3. KISS Keep it Simple Stupid
Who hates reading manual ? Familiar with RTFM? Again it is a usability issue, better by design and all this kind of stuff. Do the "mom's test", do your homework, do things with passion, and pay attention to details! Create simple yet powerful software it is a HOT thing.

4. Real life is a real test
It’s impossible to test something without real test. Take a car for example, how many years after development car is now saver than ever. Imagine you manufacture model-T today and not getting sued because it’s not roadworthy.