promoting our link

There are quite a few free traffic resources available for promoting your links and getting referrals. I like to use free traffic exchanges, free downline builders & safelists but also use "signatures" in my email or forum postings where allowed. Some are easier to use than others and some work better for some sites than others. Your computer experience, available time, writing skills and other factors also come into play. What kind of site(s) are you wanting to get traffic to? What kind of site(s) are you wanting referrals for? How much time do you have to devote to your promotions?