Search Engine Journal - 4 Tools Visualizing Domain Backlinks

Nice post about graph based tools you can use to investigate competitor backlinks:
4 Tools Visualizing Domain Backlinks

Search Engine Journal - FireFox Addons to Explore Backlinks in Google Webmaster Tools

List of good addon tools to use to explore and identify links for your link building campaign:
FireFox Addons to Explore Backlinks in Google Webmaster Tools

Search Engine Journal - Link Building Reports That Make Your Client Happy

Article listing a number of methods you can use to produce a link building report for your clients:
Link Building Reports That Make Your Client Happy

Wordtracker - Father of Link Building, Eric Ward, Reveals His Link Building Secrets

Eric Ward provides a detailed link building interview, some real gems of advice are included:
Father of Link Building, Eric Ward, Reveals His Link Building Secrets

Link Building Best Practices - An SEO is Not a Link Builder

Interesting viewpoint of the differences SEOs and link builders have in terms of personality types:
An SEO is Not a Link Builder

Search Engine Journal - Backlink Research : Essential Checklist

Another great link building article by Ann Smarty of Search Engine Journal. Gives some good guidelines and tool links for examining your competitor's external links:
Backlink Research : Essential Checklist

SEOptimise - Are Google Now Penalising “Free Gift” Blog Reviews?

Interesting take on the possibly that Google is now penalizing some sites that set up gifts for reviews with links. Since this is one of the oldest traditional marketing techniques adapted online it seems like a penalty that would be a hand edit not automated by Google. How difficult would it be to decide what is a gift review? Time will tell:
Are Google Now Penalising “Free Gift” Blog Reviews?

Winning the Web - The 3 Strategies of Link Building - Why & How You Build Links

Good overview of the three main strategies most marketers focus on when building links:
The 3 Strategies of Link Building - Why & How You Build Links

SEOMozBlog - Link Forensics: Finding Shady Links Before Taking on New Clients

Good article on checking the previous SEO for prospective clients, some good advice on links checks and discovery of cloaking techniques:
Link Forensics: Finding Shady Links Before Taking on New Clients

Search Engine Land - Linked, Tagged, Tweeted, and Feeded - Three Real Time Link Trackers

Eric Ward discusses the techniques he uses to track newly created links for his clients:
Linked, Tagged, Tweeted, and Feeded - Three Real Time Link Trackers

Dave Naylor Blog - Are Blogs a waste of time in Google now

Discussion about blogs and how they are faring from the link wars in Google search engine results:
Are Blogs a waste of time in Google now

Search Engine Journal - 5 FireFox Extensions to Enhance Link Analysis in Yahoo

Good list of FireFox extensions for use in link building work including Yahoo information:
5 FireFox Extensions to Enhance Link Analysis in Yahoo

Search Engine Land - The Link Building Kiss of Death

Eric Ward provides some tips regarding contacting websites for links:
The Link Building Kiss of Death

Bruce Clay / The Foush Blog - SES and SMX Advanced 2008

Two interesting takes on the recent SMX Advanced "Give it Up" and SES "Social Media Success" sessions discussing among other things the use of fake profiles for link building and information on grey/black hat techniques used in the industry:

Bruce Clay Blog
SMX Advanced 2008: Give It Up

The Foush Blog
SES & Social Media Strategy: what happened to ethics?! (A rant)

Search Engine Journal - Explore Your Competitors’ Backlinks Beyond Yahoo Site Explorer

Ann Smarty has yet another link article with good info, this one provides two other search engines to use in your link building work beyond Yahoo Site Explorer:
Explore Your Competitors’ Backlinks Beyond Yahoo Site Explorer

Stone Temple Consulting - Matt Cutts Interviewed by Eric Enge

Interesting interview with Matt Cutts with some info on what he views as reasonable linking techniques:
Matt Cutts Interviewed by Eric Enge

Link Juicy - Advanced Link Building - An Interview With Fantomaster

Excellent two-part interview with Fantomaster on advanced link building, don't miss this one:

Part One: Advanced Link Building - An Interview With Fantomaster

AND

Part Two: Advanced Linking Interview With Fantomaster

Search Engine Guide - Deep Links: Web Users Want What They Want And They Want I Now!

Another great link building article from Jennifer Laycock of Search Engine Guide, this article is about the importance of gaining backlinks to deep links on your website:
Deep Links: Web Users Want What They Want And They Want I Now!

Jim Boykin's Blog - The Achilles Heel of Free and Natural Links

Good article on the problems associated with free links and how important anchor text is to good link building:
The Achilles Heel of Free and Natural Links

SEM PDX - Think Outside the Link

Clever article detailing different ways to think outside the box when it comes to link building:
Think Outside the Link