what is the minimum search for a keyword

[ComputerCelebrity]

The question i have is what is the minimum search for a keyword. like when i go to overture and search for a keyword and it says that a word of phrase was searched say 30,000 is that good. and also what is the lowest search for number i should consider using. thanks for your help. im new to this forgive my stuped question.

[adeelshahid]

overture only shows results of keywords which have had some commercial run over it.

While for the question of if we can target a keyword of 30,000 visits i would like to know that also but i know whenever you optimize think about the keyword if its commercial oriented for you or not even if it has low value.

:)