The "link" column is kinda unnecessary especially when can just go to the "website" column if you want to be redirected to the site of a particular service. Honestly, It'll be better to just use that column to add another useful information like for example in "exchanges", you can add the fees--just the withdrawal fee in btc should be fine or in "wallets" tab, you can add how safe it is or its available platforms etc...
Anyway good start guys. I just wish you can add more information particularly on the exchanges tab since I've been looking for an overview of exchanges where fee's are also covered