DANIEL LYONS

Remember the early days of the Net, when everything was going to be open and free, and we were all going to share information in a techno-utopia? That was great until people realized that their user data could be turned into gold. Now there are billions at stake, and nobody is playing nice anymore.

Confining a resume to a single page is good advice for anyone.

Can anyone create an enduring business on the Web, where it's easy to build new companies, and when survival depends on the whims of fickle users? The big lesson of 'Digg' may be simply this: if someone offers you a ridiculous amount of money for a company that wasn't that hard to build, don't think twice. Take the money and run.

In the 2010 holiday quarter, Apple reported $26.7 billion in revenue, up 70 percent from a year before. That means it's nearly as big as IBM, which did $29 billion in the same quarter.

'Do not track' probably won't spell doom for online advertisers. But it will put the burden on them to explain to consumers what targeted advertising is and why it's good for them. They'll have to come out of the shadows; they'll have to be honest with people. What a radical concept. I'm all for it.

Every new HubSpot employee has to go through training to learn how to use the software. That's a good idea, and it also keeps me from having to worry about what I'm supposed to be doing here or why Cranium, who hired me, still has never come by to say hello or talk about what he wants me to work on.

For the most part, cookies aren't dangerous. They were created so advertisers could get a better idea of who you are and what you're interested in, so they could send you ads you're more likely to find relevant.

Nvidia's CEO, Jen-Hsun Huang, is an engineer and a chip designer. He cofounded Nvidia and still runs it like a startup.

I guess I always had made some assumptions about what it would be like to work in a tech company, and some were right, and some were wrong. I had a lot of, looking back on it, now naive ideas about how companies build their brands, and a lot of those notions I ended up realizing were kind of wrong.

Conventional companies try to find new uses for capabilities they already have. Transformers look at what the market needs and then go build it, hiring new people and/or taking people off other jobs.

You realize that if you're in the media business, technology is fundamentally what's driving the change in that business.

Most startups flame out or just muddle along. Your chances of spotting a unicorn, pre-horn, are incalculably small. But if, knowing that, you still want to toss aside your cushy job, at least listen to corporate vets who have made the transition.

I think the issues around diversity of all kinds are really a huge problem in the startup world.

People who write about technology love to huff and puff and hyperbolize. The fate of the entire world seems to hang on every move made by Microsoft or Google or Apple. Every new smart phone gets billed as a potential 'iPhone killer,' while every new product from Apple represents the dawn of a new era. It's ridiculous - and exhausting.

There are people who do things in tech that have the same skill sets that journalists have. They write, they edit, they put out press releases.

PayPal claims it can help merchants expand into international markets; its system makes it easier to do business with customers in multiple countries, for example, by handling tricky stuff like currency conversions automatically.

The iPhone is like 'omakase', the style of sushi where the chef chooses what you're going to eat, and might even tell you how to eat it - no wasabi allowed on this, no soy sauce allowed on that. Definitely no California rolls.

There are too many ways that a startup gig can go sideways. If the startup won't agree to hefty severance, pass.

Mesh networking is an old idea. Oddly enough, the low-cost XO Laptop built by the 'One Laptop Per Child' organization - the so-called $100 laptop - was designed with built-in mesh networking. The idea with the XO machine was that many kids using those laptops would be out in rural areas without reliable Internet access.

'Silicon Valley' likes being satirized. They've all been waiting for someone to come along and make fun of it.

Is any job safe? I was hoping to say 'journalist,' but researchers are already developing algorithms that can gather facts and write a news story. Which means that a few years from now, a robot could be writing this column. And who will read it? Well, there might be a lot of us hanging around with lots of free time on our hands.

Why can't modern tech companies both grow and turn a profit at the same time?

PayPal, which was founded in 1998, may be the closest thing to a global currency that has ever been created. Based in San Jose, California, the company operates in 190 markets, sending and receiving payments in 24 currencies on behalf of 90 million active members.

GE rolled out a popular TV ad campaign in 2015 explaining why youthful techies should give the 'digital industrial' giant a second look.

The technology, called near-field communication, involves a microchip that can send and receive data across very short distances, about four inches. Instead of swiping a credit card, you hold your phone near a reader and let the data zip between the two devices.