I've been playing with the Google Keyword Tool to see if I can find some good keywords to target.
One thing I notice is there is a huge difference between "broad" and "exact" monthly searches. For example, I would receive 350,000 monthly searches on "broad", and only 3,000 monthly searches on "exact".
This makes sense since "exact" matches will always be lower, but my question is what minimum monthly should I look for when I do an "exact" match? Would targeting "exact" keywords with under 500 monthly searches be worth my time?
It almost feels pointless to target keywords if only 500 people worldwide are searching for these keywords a month; it seems like so little compared to the "broad" monthl searches.
Also, when would it be useful to use "broad" match? I read online that this type of match might be better for Adwords campaigns?
Is using the Google Keyword Tool only useful/helpful for Adwords campaign, or is it also useful/helpful to find keywords to target for SEO?
Would targeting "exact" keywords with under 500 monthly searches be worth my time?
Yes, if the targeting is good enough.
is it also useful/helpful to find keywords to target for SEO
Yes, it can be useful for SEO research. Focus mainly on phrase match or exact match when you're researching, though. Consider the quality of the targeting and also the strength of the competition for the keyword before you invest effort into organic SEO.