www.pricesofcoins.com Key Features:
Access many digital currencies like bitcoin and ethereum.
Rates: We dynamically calculate all rates in 15 minute intervals
Exchanges Covered: Over 60 Digital Currency trading exchanges from around the world
Exchange rates calculation: Exchange rates are calculated by averaging multiple market prices across various exchanges, weighted by volume traded on them in last 24 hours. To calculate the fair market value, we use both passive (Orderbook) and active (Executed transactions) market data.
We have included market capitalization of listed coins
We have listed all the relevant cryptocurrencies traded on various exchanges throughout the world
We have also included 24 hour percentage change of all coins
We will be adding new cryptocurrencies to our list every month
Features which we will add in the future:
Public discussion forum for cryptocurrency lovers to share their opinions on a common platform
After a brief glance, I'd say some improvements could be made.
For example, the first question which comes to mind is why is the logo so big on every page. If I had a small display, every time I navigate across the website I would have to scroll down right after I open a new page, as because of the huge logo I wouldn't be able to see more coin prices or info. It's ok if I need to check few coins' prices but if I need to check more ones it could be a bit annoying to do a lot of unnecessary scrollings.
If I click for example on Ethereum on the homepage I will go the Ethereum price and details page. There I can see the 'Ethereum' title at the top of the page and it's ok as I need to know which price is being displayed at the moment in case if I somehow forgot which coin I've chosen on the previous step. Next, in the table, I see a 'Name' column again where I can see four more 'Ethereums'. It looks redundant in my opinion and 'Name' column can be deleted without any usability losses as it doesn't provide any new information. The same with '#' column. It doesn't give any useful information and can also be deleted. 'Circulating Supply' and 'Percent Change in 24 H' amounts are displayed in each row despite that fact that these amounts don't depend on the reference currency. Each of the amounts can be displayed once in one combined cell for all rows. It would be also useful to have at least a link on the coin's official website.
Everything described above is only my humble opinion but maybe it will help you somehow.
