As we all know, getting your url on another sites is very SEO friendly.
If you like to trade hard links with us, please put our site somewhere on your homepage. After you do that, send us an email on: admin (at) girlsstickam.com, with short description where have you put it, so we could verify that.
Then, we will manually add your url of your choosing (your site, and free), into the footer.
We will not expect mayjor traffic exchange through that, this is as we mentioned, for better SEO purpose.