Thank you for asking the question. I ask readers to donate the cost of a cup of coffee for four reasons.
It keeps the site ad-free
First, I want to keep improving the site. You may have noticed there are no ads on the site. Also, the site how has the domain thoughtmanagement.org. Both of these upgrades improve the site’s look and feel, which is why I am asking readers to donate.
Research, Writing and Editing (The blood, sweat, tears and toil)
Second, I want to keep providing high quality blog posts. Each post takes time to research, write and edit. On average, each blog post takes about 8 hours’ work from start to finish. A donation helps with all of these tasks. Donations mean I can access subscription material and material that is only accessible through a payroll. Most importantly, here in the UK, it helps me pay for university library card fees. (Yes, in the UK you have to pay for a university library card if you are an external borrower. If you graduated from the school it is usually free).
Extras
Third, it will allow me to develop additional services from the site that can be made available to readers. I can develop e-books or specific research papers.
Coffee
Fourth, the site is powered by coffee. Your donation is like buying me a cup of coffee. With good coffee, I write better. 
Why a cup of coffee?
I like coffee and I like conversations, which is what the blog combines. In any conversation, the people exchange ideas and learn from each other. I would normally share these ideas over a cup of coffee, which is why I ask that amount as a donation.
Without donations, the site will not be able to improve nor will it be able to stay ad-free. You can help me to improve it and this is why I am asking you to buy me a cup of coffee.
Thanks
Lawrence Serewicz
