I should preface this by saying I don't believe in SEO software as a complete solution to your SEO needs. I believe it is a useful addition to your toolkit even if you only use it to assess your current SEO rank and that of your competitors. If you at all in doubt about SEO software you are using then don't use it. You are better off floundering around hoping for some Google love than using black-hat or incorrect techniques to get better rankings.

IBP simply gives you the advice and statistical information you need to make informed decisions to then alter your website accordingly. It is not a panacea for all your Search Engine Optimisation worries.

IBP 11 (Internet Business Promoter) from Axanda is SEO software that has been around for a while. They currently boast a guaranteed Top 10 Ranking which always sets the alarm bells going but they are usually quite honest about why their software is useful and white-hat.

As any informed blogger or SEO guru will tell you, having unique content on your website is more than just a little important these days. Ensuring Google (and other search engines, lest we forget) see you as a credible and unique source of information for the content you write is one of the last things on the web worth really protecting. After spending quality time writing and optimising your content it gives you the wookies if people steal it.

NB: There are a lot of ways people can get your content and use it for evil. One is the simple copy and paste. Two is using a scrapper to 'scrape' your information from your site automagically. Three is taking RSS feeds and importing them as posts on their own sites without including a link to original. And there are a few more no doubt.