i received a letter - handwritten - from someone we met last week. normally after exchanging business cards we will emailed each other just for the sake of continuing the communications. truth is i didn't know about this until i realised i've received emails from those i gave my cards to that i did the same now, though only to those that i communicate a lot with during the meetings. therefore i was quite amazed when this time around i received a letter as the form of communications. i mean, in this globalisation era someone still send a letter - and to top that up, this someone is a high class professional with his own business here. now, should i answer by sending a letter or would a simple email do?