http://www.symbaloo.com might be what you're after.
But, this is a time for me to show what we did long ago (Active Desktop):
https://www.youtube.com/watch?v=9pRJEqAZV8g
Still works in windows 7/8 https://www.youtube.com/watch?v=AlR0rc-soCw
There are quite a few of those "social bookmarking" sites out there.
Edit: Oh, I guess it's more like this
I use games from a cooperative learning book, I also use games online. Here is a link to my symbaloo I give them for grammar games online. The star on top is an info page on the Web, then if applicable the grammar rock song, then games to play that cover some various topics: http://www.symbaloo.com/mix/partsofspeech16
Bitcoin is freedom for money & Blockchain is a Revolution anyone can join. Earn free cryptocurrencies while using a variety of high quality websites... http://www.symbaloo.com/mix/freebitcoinuniverse & http://www.symbaloo.com/mix/btc
Ben wel benieuwd welke bedrijven die export genereren. Philips en Shell hebben betere tijden gekend.
Als je de top 50 exporterende bedrijven zou pakken, zou de som dan in de buurt van het genoemde getal komen? Dit is blijkbaar zo'n beetje de top 50.