I had never heard of Karen Sparck Jones before, I’m thankful I have now:
We have a team of linguists / developers at Yoast, looks like we owe her a great deal.
Joost de Valk
Joost is an internet entrepreneur from Wijchen, the Netherlands. He is the founder of Yoast. Joost is married to Marieke, who is also Yoast's former CEO. Marieke and Joost have 4 kids together and run Emilia Capital together, an investment firm.