Here is a link to a free white paper about Ten Mistakes to Avoid When Searching Gene Sequences presented by GenomeQuest.

Massive growth of worldwide gene sequence data has created an economic imperative to ensure gene sequence searches are complete, relevant and timely. Yet, more often than not, gene sequence searches are fraught with costly mistakes that impede research initiatives, weaken IP claims, and ultimately delay drug development. This compelling paper, compliments of GenomeQuest, identifies 10 surprisingly common yet often unrecognized sequence search mistakes. It also gives valuable insight on how to prevent them in order to improve and accelerate your research initiatives.

You must register for their site to access the free paper.