Ayo, long time lurker here. I've recently started my first serious project, and have been working on hard on my first affiliate site. My plan for tier 1 links is the following: mostly high quality Web 2.0s, and then some forum profiles, social profiles, social bookmarks, article sharing sites, youtube videos, blog comments, and some other miscellaneous stuff. I know that Web 2.0s are ok to throw some tier 2 links at, but I was wondering if it a bad idea to make tier 2's to any of these other platforms? I plan on doing 10 tier 2 links per tier 1 every day for the next couple of months.