[edited by: tedster at 9:58 pm (utc) on Nov. 28, 2007]
[edit reason] no specific keywords, please [/edit]
However, a given set of keywords, ultimately, is capable of delivering 'x' amount of traffic. If the traffic you are receiving is not what you were hoping for, it is at least possible that your current keywords are delivering all the traffic that they are capable of delivering. If this is the case, then increasing the daily budget will not increase traffic since there are no more available impressions.
The solution, if this is the case, would be to add additional keywords to your ad group. I am not suggesting that you add keywords at random, just to pump up the volume of impressions, however. It's far better to use targeted keywords that are highly related to the subject of the ad - and which represent the way your potential customers would search for what you offer.
AWA
One more thing I would like to share. Yesterday I set up the same campaign in Yahoo, with the same keywords & adcopies. I managed to get 5 time the impression & clicks than adwords.
What should I do in Adwords to increase the impressions.
Thanks in advance.