I am interested in trading, this is why I ask. Maybe my method does not work for other climates and I want to make sure my seeds work for other people too, of course.

I'd appreciate any information on tomato seed preservation.

http://faq.gardenweb.com/faq/lists/seedsave/2002084456024410.html

and since I will prepare some for trading I will follow it.

This is a great question. Thankfully, removing the pulp around the seeds is not very hard. There is a blog site that I have, and all this month and the next month, I will be talking about saving and collecting seeds. Next Sundays blog will be on storing tomato seeds. In that blog I will be talking about how to collect, clean(get off the pulp,) and dry them!

This is nice because, like you, I like to trade my seeds, and everyone likes seeds that are like the stores!

~Zach

my blog url is:
www.vioboy.blogspot.com