So, Vod, please remove the negative feedback you gave me, because it's completely unfair.
Stop being so dramatic please... it's not "completely" unfair - just partially.
I'll change my feedback to remove the word virus. That will remove the partial unfairness.
It may not be illegal, but it's used by perverts and criminals alike. It is untrustworthy.
I think you did wrong to spoil Boseda his reputation. I'm learning programming and it was interesting for me to study his program. If you think keylogger can cause harm, well everything can as well - you can use an axe to cut your thumb or to build a house. You can use a fire to burn your neighbour or to get some warmth. We all know that many people consider bitcoin to be just hackers' money or ponzi scheme.
I request that Vod reconsider his assessment. This is the forum where many programmers dwell and it's good that some of them shares their knowledge.