It might not seem much to you now, but to a student in Finland, receiving an immediate and positive response to a request from a very important person in your field is y(h)uge.
I recall the feeling I got the first time I sent a message to the Nessus mailing list. I couldn't compile the program so I was asking for help.
I thought I was going to wait for a long time, but was surprised when a response came a few minutes after. The response came from the author of the program itself, and he was very nice in how he answered my question. It was obvious that I was a noob and needed hand-holding. It made a lot of difference to me.
You have no idea how that positive response affected Tatu.
Edit: Changed possible to positive in the last paragraph.