Big warning signs include but are not limited to:

Companies accepting Bitcoin as their only payment method. They're generally either unwilling to disclose account information or don't have one as this makes it easier for the authorities to catch up with them.

Websites that demand unreasonably fast payment for example Bitcominers rushed people into panic paying within 3 hours to get such a cheap deal.

No phone number isn't a great sign and if they have one call them!

Even ask to meet in person, if you're in the same country and they're genuine it shouldn't be a problem

Also check the going rate for their product, if it's way too cheap this should ring alarm bells and warrant further investigation prior to purchase. Start small! If they're new and untested don't send your life savings, start with the smallest option to reduce the capital at risk.

Most importantly research before you buy! We see countless posts on the forums of people finding a thread about a known scam after they've purchased...

Ultimately this is the dawn of crypto currencies with people scrambling to get in before wider mainstream adoption as a way of storing wealth, sending money cheaply worldwide or buying goods online. Some unsavory characters will attempt to take advantage of this crypto gold rush which will inevitably harm it's longer term potential!

To quote the old adage 'If it looks too good to be true, it probably is...'

I've seen tonnes of these scams recently they normal use the same library picture of a data center with blue sever cabinets.

This site is very useful to search for the known scams http://bitcoinscammers.com/

If a website claims to be a 'Limited company' don't just take their word for it, check with companies house in the UK http://wck2.companieshouse.gov.uk//wcframe?name=accessCompanyInfo

We're genuine groupbitcoin.com if you're still interested in cloud mining

Hi guys, sorry if this has been covered somewhere ( I did a search and I couldn't find an answere)

How many antminer u1's can you have on a usb channel? (Assuming that the ants are on a powered hub)

The reason I ask is I am looking at my old raspberry pi, and wondering how many it can handle?

Thanks in advance

For Example : credit cards are much easier to carry and use than cash and offer Tx details to the client BUT slow payment verification, high (relative) commissions, very high foreign currency commissions.

I want to describe in my work the impacts bitcoin can have on the old economy.