Most efficient way to analyze kw difficulty for thousands of kws?

[nicole.healthline]

Been trying to extract kw difficulty for a list of 1400 kws and wondering what the most efficient way to do this is? Any links to tutorials would be much appreciated.

[matbennett]

One tool I occasionally find useful for larger lists is market samurai.  It's a free keyword analysis tool much loved by sectors of the market that don't frequent seomoz as much.  Can be useful though.

The tool itself is actually a paid one, but you can use it in free mode and get a few features. All the keyword research stuff is included in the free version and is actually more useful than most of the paid stuff!