While we don’t update the blog every day, we do post and spread interesting links via Twitter. Follow us at @w3roi and keep up with the latest in marketing, copy writing, brand building, SEO and conversion optimization articles published around the net. Every once in a while, we’ll wrap up all the links we’re sharing in a Recommended Reading post like this.

Here’s what we shared with you this week:

Hidden Secrets of the Amazon Shopping Cart – Bryan Eisenberg explores the history of the Amazon shopping cart interface, and shows how Amazon has evolved its process over time to become and remain one of the top converting ecommerce sites on the web.

Authority Rules – A short report by Copyblogger author Brian Clark about the importance of authority, both in the traditional sense and in terms of SEO and online marketing.

Web Analytics Demystified – An old but packed and completely relevant article about the types of web analytics available and why they’re important to any website.

Bid Like a Pro with the Bid Simulator – A Google AdWords blog post announcing the new Bid Simulator, which lets you see the clicks you would’ve received had you placed certain AdWords bids in the past week.

Speeding up Google Analytics Load Times with a jQuery Plugin – Load times are incredibly important to the bounce rate of a website, and external scripts can influence them drastically. This tutorial provides code for loading the Google Analytics tracking code after page load, instead of during, using the jQuery JavaScript library.

9 Characteristics of Well-Designed E-Commerce Websites – A rundown of 9 important characteristics of good e-commerce design, with examples from sites that make use of them well.

Understanding Linking Intent; the Spam Connection – One of the most in-depth explorations of the various ways search engines analyze links between sites we’ve read. Essential information for planning a link building campaign as part of your SEO efforts.