Hi Amit,

This is an important question, and how you address these errors and warnings depends on your experience level and the needs of your site. It's also a tremendous opportunity to further your SEO education.

For many folks like yourself, the best thing to do is to tackle each one of these issues one at time, learn from online resources until you are a near expert, then move onto the next one.

Each site is different, so there's no "one size fits all" solution. The exact "fix" will always depend on too many variables to list here, but here's some tips to get you started.

1. 4xx Errors. The best thing to do is download the CSV of your crawl report and open it in a spreadsheet program. Find the URLs that cause the error, and in the last column find the "referrer". This referrer will tell you the URL that the bad link was found on. If you go to this page, you can usually find where the broken link originated and decide if it needs fixing.

2. Too Many Links - This is a warning, not an error, so you may choose not to fix this. To understand the warning further, I recommend reading this article by Dr. Pete:

http://www.seomoz.org/blog/how-many-links-is-too-many

If you decide that you should address the pages with too many links, you can then start to decide which links you should remove.

3. Canoncial  - Finally, these are notices, which aren't necessarily bad, we just want you to know they are there. For a little background, you might want to read the following:

http://www.seomoz.org/blog/complete-guide-to-rel-canonical-how-to-and-why-not

http://googlewebmastercentral.blogspot.com/2009/02/specify-your-canonical.html

To add to what Kyle said, the reason you are seeing these statistics is because you have virtually no inbound links that point to your domain.

Without inbound links, web crawlers have no way of finding your site. Search Engines such as Google also use links to determine how popular a site is. To put it (over)simply, the more links that point to your site, the better you are likely to do in search results.

The best way to improve your domain metrics like Domain Authority (and even PageRank) is to start building links. But first, I'd start by reading the Beginners Guide to SEO.

Building high quality links is difficult and rewarding, but almost nothing is more rewarding for SEO.

Hope this helps. Best of luck with your SEO!

1. The different colors provide simple visual aids to help you identify metric strength. For example, the colors are divided into the types of data they represent.

• URL Metrics - Green
• On-Page Optimization - Blue
• Domain Name-KW Match - Yellow
• URL Anchor Text Metrics - Purple
• Domain Wide Link Metrics - Red
• Social Signals - Green (again)

Within each metric, darker colors indicate which URL has achieved the highest level within each category - the "winner" of the metric, so to speak.

The best way to use this tool is using it to see how the top positions are winning, and compare yourself to them. Perhaps you are winning on social signals, but need better on-page optimization. There's no right answer, but the tool provides a wealth of information to see how you compare to the competition, how they are succeeding, and what you can do to improve.

2. The Term Extractor, unfortunately, can be a little temperamental. This is a known issue and our engineers have plans to improve this feature down the line. This is a really helpful tool when fully functional, and it still provides pretty good results for most users.

Hope this helps! Best of luck with your SEO.