Which tool is widely used in keyword research?

Google Adword is one of the best tool for keyword research because we can easily check competition of keyword as well as locally and globally searches of keyword so every one preferred that tool.

I personally used google adwords keyword tool, it's really a very nice tool for keyword research.

I started with Google Adwords Keyword Tool but with growing competition made a switch...I've been using Keyword Country to find geographically active keywords and test them for profitability. I've had a play around with other tools too, but nothing close to KC...

I am also use Google Adwords keyword tools, its so easy function to use. 

I recommends you to use google adsense for keywords research and also try to find into your computational sites.

WordZe will not only show you what keywords are being searched for, you will also gain access to tools that will allow you to track keywords beyond their estimated daily search volume.

Google adword tool is the best one for keyword research because it provide you relevant keywords very easily and provide local,global monthly search of keywords and also the competition and PPC of keywords,whole of tis info is very necessary while doing keyword research...
Thnx...

The Google Keyword Tool lives in the Google AdWords system and is a free keyword research tool primarily designed for AdWords users looking for more keyword ideas for their Campaigns, but is equally useful for SEO keyword research.

If you want to increase traffic to your blog, then search engine optimization (SEO) should be important to you. In order to optimize your blog for keyword search traffic, you need to start by doing some keyword research and long-tail SEO research to learn the keywords and keyword phrases people are using to find content like that offered on your blog.

Yes i totally agree with you we can choose long tail keywords and we can also choose the keywords which are of low competition,high traffic or you can say  which have high local and global monthly search.In Articles and Blog we should prefer the long tail keywords....

i think google's webmaster tool is the best tool for seo purpose. with the help of this tool you can perform all the aspect which is require to perform the seo.

For me Google Adwords keyword tool is one of the best tool for doing keyword  research. I like to use this tool always.

google adword tool is best tool for keyword analysis.

Always check the competition of keywords as well as the number of searches of keywords.
The best tool is Google Keyword Suggestion tool that is Google Adwords but you can also check on Word Tracker and keyword discovery.

Google Adwords, Keyword Stream and Word Tracker are the best tools for Keyword research.

I always use Google ad words keyword tools and word tracker to find keyword for any site.

I found google keyword tool best..because it gives us each and every information required before selecting any keyword..So I always prefer using it..