One keyword for one month NO impressions

I have more then 20 keywords but from one moth I use just one keyword my problem is that I don't have impressions I don't see my site listed in yahoo. I don't understand why. Thanks

 

If you are targeting a different region than you are living, then you will need to go via a proxy in region where your ads are being shown.

Otherwise it could be that your max bid is set to low.

 

My bid is set higher I don't use any targeted regions, and my impresions don't grow up. Thanks

 

I am not sure then. Phone them up, they are very helpful.

 

thanks a lot for your help

 

you must have a keyword that is not searched very many times then.