Adsense Questions ...

[dbee]

Hi,

I have one or two questions about Google Adsense that I was hoping someone could clear up.

1) If I'm running a campaign for eg. real estate new york, Google gives me a load of Keyword suggestions but says that it's more effective to use 20 or less ...

I figured that in terms of the longtail - it would be a case of the 'more the merrier', seeing as how even reasonably obscure words could pick up visitors ? This is assuming of course that the keyword campiagn is monitored to remove any non-performing words.

2) If I select certain very specific keywords and use them as an exact match eg. 'manhattan balcony apartment' - this will generally be cheaper than just 'manhattan apartment' right ?

Now what if I have 'manhattan balcony apartment' in my kewords, but another person has the three random words manhattan balcony apartment ? Does this add to my quality score ? Is my site going to be rated higher cause I've matched the exact keywords ?
Thanks