Presents might not mean a whole lot to you, but I personally like getting things. Especially if I can use them, or if they're gifts of money (which I rather desperately need).
You shouldn't feel terrible, but I just hope that you understand that providing one method of contact in a public forum is far from irresponsible or careless.
I like to get to know someone too before giving them my contact info, but I'm not about to trash people who are more socially open with their screen names.
Totally careless to share IM information so that you can get in touch with people and be able to send more than ten messages a day to them (or others).