I wrote 10+ quality articles of 300+ words and put them on web2.0 blogs. The problem is, none of them are showing up on any BL checker, and since I added them, my rank in serp hasn't moved. It's been over 15 days, it's been indexed (shows up with site:******), but the backlinks aren't counting. Has anyone encountered this problem before? What should I do to fix it, remake the web2.0 property and post same article there?