Amazon eCommerce & Bitcoin investment : feasible or scams?

Are the following business scams (I registered for a talk) or genuinely, there are people
who made it in the businesses?  I've heard of a neighbour's friend who made about
US$600k of sales via Amazon.

And the bitcoin talk below as well:!/index

What are the tell-tale signs if they are scams or anyone had been through them before & care to share?
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Dr. KlahnPrincipal Software EngineerCommented:
Well, one of the key indicators of a scam is:

"I've heard of a neighbour's friend ..."

In other words, it's always some third party who is not convenient to contact, not available, doesn't want to talk to people about it, etc.
David Johnson, CD, MVPOwnerCommented:
If it sounds too good to be true, it probably is. Some people have made a lot of money selling Amway/Avon (not the products) but the brand and recruiting more sellers.. The Multi-Level Marketing concept,, There are the trade schools that are for-profit and have absolutely no association with the trades themselves that boast 90% employment, yadda yadda, but no guarantees. If you spend thousands on their courses and get a job flipping burgers you count as being part of the 90% employed. The Tony Robbins, Donald Trumps have their schools and training courses. Sometimes you go on a paid vacation at some luxury spot.. you just have to attend an hour-long seminar a day. These seminars are led by people skilled in getting others to part with their money by offering a vision for a price.

The only people that make money are the organizers.

This reminds me of the send me a dollar and a self-addressed stamped envelope (SASE) and I will sell you a plan to make thousands with little or no effort.. you send the stuff and what you get is a card.. take out an advertisement that follows the format of the ad that you followed to send me the money $1.
Terry WoodsIT GuruCommented:
I've made a hobby of studying Bitcoin since close to when it started, and quite a few other cryptocurrencies. Almost always when someone is advertising that you can make money with Bitcoin, it's a scam. This is especially true if it's they are selling a technique or tool for earning money through trading, as there would be no need to sell the tool when they can make more money by just trading.

If you are really interested in cryptocurrency, I suggest you learn enough about several different cryptocurrencies and the problems that each one is trying to solve, and the challenges they face. For example, Bitcoin ran into problems with transaction fees getting way too high, and the businesses running Bitcoin mining may be too centralised (ie I think 2 or 3 mining businesses control over 50% of the mining power for the network between them, which potentially allows them to double spend funds). Also, Bitcoin is terribly environmentally unfriendly compared with other cryptocurrencies using a Proof of Stake system. Once you get heavily involved in a community for a cryptocurrency you see as having a good future, you'll start to see opportunities to earn money from it.

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sunhuxAuthor Commented:
Thanks very much guys;  I must be quite desperate for an
easy passive income as work-life is tough
sunhuxAuthor Commented:
2 colleagues claimed that they made good $ from bitcoin trading:
I suppose it comes with high risk as well ie the old adage
"High Risk, High Return or High Loss"
カカシ はたけCommented:
I have a plan invest bitcoin on ICOs. I found iTrue platform on   This project looks profitable and trustful. I heard many good reviews about this project. Users have full ownership of their data, and have full control over where their data is shared. I think that it is good thing for customers.
sunhuxAuthor Commented:
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