I had a bunch of files I needed to convert from image (*.png) to PDF. I downloaded a trial version of an expensive ($399) program that was limited to converting a total of 100 files, after that you had to purchase the program. This was a good program, it operated in batch mode, was fast, accurate, and had flexible naming conventions.
I used the trial version with no intention of buying it, I don't anticipate ever having to do this kind of conversion again. After I converted my files, I said "Thank you very much, adios, goodbye", deleted it from my computer and sat there happily looking at my new PDF file.
Was this unethical behavior? In view of the extraordinary price they were asking for the program, and that there is software available for download to do the same thing for free (including my own Adobe Acrobat program) although not as conveniently, I don't feel too guilty.
tanstaafl.
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"There Ain't No Such Thing As A Free Lunch"