If there were an exchange service that disappeared of the web without apparent reason, it was Bitlish. This service used to be good in the beginning for the western regions of Europe, especially the UK where it was baked, but after some terrible failures in the company, the team decided to stop providing services. Now, if users try to get access into the page, the result will be 'service no longer available', and this is because the company took all their services and tools out of line. They suspended them, and finally deleted all possible links that used to join the network to the trading fields.
Now, some users still think of that service and the opportunities that could have achieved the CEO with a battery management plan. However, it is not clear the reason why it became so unpopular. The fact is that it will never recover from the current status, and this is something bad for that company, even when they might plan to start another type of financial development.
There is no risk for accessing the link still available. But remember, access won't be granted since it does not exist anymore. So, I suggest users do not look at their time trying to learn in a service like this.