Each time you post on the forum you get a point, could be the reason.
Or it also could be to let a positive feedback for the author. Always feel good to know that you are doing something good even if it's only from few words.
You have asked a very good and genuine question.
Thanks Megistal for your reply. Actually the second reason is correct. I am in writing business. I am certified as MCSE, MCSE+I, MCDBA, A+, CCNA. I know what effort it takes to write a technical document. It is not a 'copy paste job'. In this forum we are all SQL Server expert and we write about them. But in reality I know who writes for most of the 'famous' publishers in the world. The people who writes have little technical knowledge. They only get technical tips from the SMEs. But the end product in most cases are fantastic. I keenly watched Brian's videos. Their product is very good. We developed products for many parts of the world may be some of you have read those. A little appreciation is more effective then a long phrase. I even say 'Nice' when I still found errors in the article. I hope this may encourage the author. But if people thinks I am writing for 'points', then I will stop writing the same.
By the way Gregor your article is really great.