I know, and the number of people that post questions, expecting answers and then nothing, not even a thank you or any sort of acknowledgement is far more common than it used to be. Seems common courtesy has gone out of the window!
I wasn't directing my reply to you personally, just a general observation that thanking people for their help is not very forthcoming. I also noticed that you had posted this question on crosswords and it had been answered, so not telling you off, just reminding you :o)