When it comes to online advertising, the retail industry tops the chart as the highest-spending sector, projected to grow 24% this year to represent 22% of all online ad spend.

With Facebook’s unparalleled reach as an online media outlet and its unprecedented targeting parameters from demographics to interets and actions, retailers are certainly understanding the power of Facebook beyond driving Likes to fuel their bottom lines. In fact, Nanigans’ customer Fab.com was highlighted yesterday on CNN as being “the e-commerce company that was built on Facebook” (see: Startup Fab says thanks, Facebook!).

Retailers are turning to the social network in order to meet their business goals such driving member registrations, email subscribes, viral invites, add-to-carts, and ultimately purchases and lifetime customer value.

Following Facebook’s first earnings announcement yesterday, we’re releasing an infographic around how ecommerce companies are leveraging Facebook Ads. From on average how different Facebook Ad types perform for ecommerce companies to gender differences from Facebook Ad click to ultimate purchases on retailer sites, we hope you enjoy The Insider’s Guide to Facebook Advertising for Ecommerce! (Click the image to view larger.)

This infographic is based off from 200 billion Facebook Ad impressions managed through Nanigans’ Ad Engine in Q1 and Q2 of 2012. Ecommerce industry trends were originally published by eMarketer and Forrester.