i use senuke to do this, makes it super easy.. anyways, for my link structure: bookmark money site, tier 1, tier 2 every single day. for tier 1 and tier 2 i bookmark them twice. money site: hit it with my entire keyword network spun for that niche tier 1 & 2: once with every keyword in my niche spun once with only the relevant keywords for that specific blog post i'm bookmarking standard stuff, but then what I do to add a bit: grab the social bookmark RSS feeds from that run bookmark those feeds using every keyword in your niche then go through and put the entire rss feed list through the RSS nuke module. so you're giving nice links to your entire structure, then bookmarking the RSS feeds, then aggregating the bookmark feeds (which even include feeds to the bookmarks bookmarking the feeds) has been giving me a nice boost in every niche i started doing this to about a month ago.. thought i'd share. sorry if it's stupid or useless info, but.. people are lazy and who knows maybe one of you didn't think of this =p there ya go.