Is there a list, or did you just go through technorati and emailed them all?
And which ones actually covered you?
Also, what strategy did you use to contact? Start off with the small ones and worked your way up? Or start off with the big ones and hoped for a homerun?
1.
Round up the competition sites. At least 3-5.
2.
Go to: http://tools.seobook.com/link-tools/backlinks/backlinks.php and type in each of the competition sites one by one.
3.
See who linked to the competition and try to get a link back from there.