Using coin rank to invest is a good idea. The way I see it is that it's ok to put a little aside to purchase bitcoin here and there..and there is a saying that the younger currencies will grow fast then the older currencies
However purchasing the cheapest coins, like BRW, SPRTS, BCN etc..that have a history to go past the 1 cent mark is sometimes a good but risky investment. Again, buying bitcoin on the side is ok but focusing on new currencies which are extremely cheap is also a good investment option if your planning to hold the coins fr a few years.
Good luck to all the people that have invested in cheap coins which have good uses but it's also good to look at more currencies which have popped up recently or been around for a little while but have been stable.
Also the another reason why I think these are good investments is because the world still needs to be developed to use crypto currency on a wide scale which will happen but the good thing is atleast we are at the start of the journey.
The main suggestion given here is that investing in the cheapest useful coins and holding them till crypto currency is regulated everywhere and used everywhere can make you thousands and possibly millions depending on how much you have invested.
A recent investment I made was the BRW BrWaves..I used a little but of money to purchase 10 million coins, the coin previously did reach 34 cents however I bought the coins at 0.0000002 cents when is started staying low..but if the coin did get to even 1 cent you've racked in atleast $100000 and if that's after 5 years it works out to $20000 a year, which is just about a full time average salary. There's lots of coins that will be successful and there's lots that will fail. So do your research and mainly look at the uses