Has anyone used the Miva keyword generator before at https://account.uk.miva.com/advertiser/Account/Popups/KeywordGenBox.asp ? If so do you find the search counts reliable?

Sorry but Miva is cr*p. Is this keywords for SEO or Adwords?

The latest version of Google's Keyword tool gives you actual search volumes (numbers):
https://adwords.google.com/select/KeywordToolExternal

Try KeywordsLizard.com...

Another vote here for that Google tool.

The most useful one I have found is this:
http://freekeywords.wordtracker.com

It is one of the best kept secrets out there!

The free version of Wordtracker is very good, considering its cost . It's provides pretty relevant information and can give you some great long tail keywords. Too bad you're only limited to 100...

The integrated AdWords keyword tool is also great, especially with the new features they have implemented with the past month that give you a better idea of keyword demands.

Those are honestly 2 of the main tools I use for my preliminary research. There really are numerous tools out there, but I've noticed that these 2 really provide the most relevant information for free tools.

Think the best keyword generator's your head.

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[quote=webvivre]
The latest version of Google's Keyword tool gives you actual search volumes (numbers):
https://adwords.google.com/select/KeywordToolExternal [/quote]

Google tool is perfect for generating keywords and you can rely on this as its of google.