How to contact authors?

The easiest and most certain way is Internet Relay Chat.
If you're familiar with IRC, just join #finmod at Quakenet.

We have also discussion forums with both English and Finnish sections. Most sections are free for all to read, but for posting messages you're required to register at forums with working e-mail address. FDFMOD Forums.

E-mail is the classic way. Offers and requests go here.
Address for your fan mail is fdfmod@mbnet.fi.