Although eBay is a fantastic tool for collectors who want to buy or sell, you really have to have knowledge of items before you embark.

I'm a bit of a geek when it comes to music. I like studio gear. I'm always looking it up on eBay and seeing what I can afford.

If one player can say that I, Emmanuel Adebayor, spoke badly to anyone in the changing rooms, then I'd honestly like to know who it is. It has never happened in my life.

Nowadays people talk about PayPal's founders as prescient geniuses who would inevitably change the world. It was, however, not so obvious that PayPal would taste its first major success by helping people sell Beanie Babies on eBay. But they had a vision, a hope, and the perseverance to try multiple iterations until they got it right.

The thing that people seem to miss about not just Google, but also our competitors, Yahoo, eBay and so forth, is that there's an awful lot of communities that have never been served by traditional media.

I'll never forget my 24th birthday when my tooth got punched out. And for a second I was like, it would be really hilarious if I sold it on eBay. But I can't, that's just too creepy. I don't think I can go there.

I don't mind it when people come up to me and say, 'Well done.' That's lovely. The bit that's weird is stuff like... I've had a load of eBay people hounding me. Just sort of getting you to sign stuff which they can then sell.

I've been lucky enough to be involved in a number of great startups, including eBay and Wikia as an entrepreneur and LinkedIn and Paypal as an investor.

I was one of the early folks at eBay, and by 1999, it was completely overrun by consultants from McKinsey, Bain, and BCG. It went from being a cool, fun startup to an MBA factory.

I spend far too much time on eBay buying lamps and upholstery remnants.

I'm a big fan of the American Tapes label. But that's very hard to keep a grip on that because you blink your eyes and they've released three records, all of which are limited edition, all sold at one show. So you have to follow in drips and drops on eBay, which I do.

History shows fans want consolidation; you see it across the web every place. The big players are people like Google, Amazon, eBay, Facebook.

EBay is a great company. There are a lot of good assets and good customers, and the U.S. people love it.

I was an eBay addict before my first album hit big. I wanted to go on this tour of the world, so I started selling everything on eBay.

In my bachelor days, I had a small upright piano in my kitchen. It cost £10 from eBay plus £70 delivery. It was because I'd seen an old photo of Tom Waits - with dirty dishes, empty bottles, a hot plate, a coffee machine and a piano strewn with lyric sheets - and fallen in love with it.

I have spent many a night in an Internet chat room, but not since I've been married. I don't do the chat rooms anymore, but I have become completely addicted to Ebay.

Just a couple of minutes ago, I signed a couple of bowling pins for some people. That's a normal thing. Somebody will hand me something and say, 'Draw a picture! Draw the Dude!' They're probably selling them on eBay or something.

When we talk about the things at Airbnb that are challenging and that they are going to have to overcome, the parallels with eBay are across the board. It's community management. It's making sure the marketplace is in balance - the right amount of buyers and sellers.

eBay started with a core focus on the collector. At the time of its S-1, six or seven percent of its total sales were Beanie Babies.

I think if you look at the commonalities between eBay, PayPal and OpenTable, all three are businesses that built a network in a vertical. Network effect businesses are very attractive businesses.

The less concerned with aesthetics and usability these friends and family members are, the more easily they navigate sites and applications I can't make head nor hair of. Like the ex-girlfriend who mastered Ebay.

Vintage rock T-shirts are the best. I have about 50 or 60, most bought on eBay for a few pounds. You can always tell which ones are genuine because there'll be lots of pictures showing you the holes.

Although eBay is a fantastic tool for collectors who want to buy or sell, you really have to have knowledge of items before you embark.

This guy in L.A. asks for my autograph every time I see him. Then I find out he's eBaying 'em for $50. I'm flattered, but no one's going to pay $50 for anyone's autograph, let alone mine.

It's easy to forget the ever-plodding eBay with all the noise made by the more lithe and lively Web 2.0 companies.

I tend to be attracted to darker scents. I'm not a floral girl. But I do like this old fragrance I used to wear called Versace Red Jeans. I have an eBay alert that tells me when it comes back! I think it's more of a nostalgic association that I have with it because a boyfriend had bought it for me when I was, like, 16.

I love my kids, they are amazing children, but they drive me bananas sometimes. And sometimes, I want to sell them on eBay... but I'm not going to.

I do shop on eBay. I love to buy china on eBay. I've bought quite a few sets of plates. I like to buy gifts as well. If I know somebody has a favorite writer, I look for a first edition. It's also a great place to buy vintage jewelry.

I spend a lot of time on eBay buying vintage. I also really like Alexander Wang, Miu Miu, Vivienne Westwood, McQueen and Balmain.

There are millions and millions of products out there. You can look at eBay and Amazon. You can look at every product on the planet, but trying to figure out which one is best for you is really the challenge.

The easier question might be, 'What isn't Alibaba?' The company is only 15 years old, but it has gotten so big over that timeframe that it basically touches every single part of the Chinese economy. I think the simplest comparison to draw is that it is like eBay and Amazon combined.