It is very time-consuming though. Lots of software uses Google data but speeds the process up massively. If you only use it now and again, that's ok, but for people who do lots of keyword research it's better to buy software to do the job, as it will save a fortune in time and money.
I've been lucking at buying a keyword tool, has anyone used Niche Finder (by Brad Callen). Quite good reviews on another forum, interested in any opinions on DP. Thanks Jon
Since then I am using Google Adword Keyword Tool because it is more effective and it is also free. Thank you for sharing your stuff, I will still try it since its free.