I've read that deleting keywords with low CTR will, indeed, raise my CTR!? Is that true? If so, how?
I just see less opportunities to get a click if I start to delete keywords.
1)More key words does not mean more clicks
2)Deleting keywords does not mean less opportunities for clicks
Sure - deleting Keywords that are not working will increase your CTR.....
I think your (assuming) getting to tied up in the keyword thingy....
Concentrate on your Ad Copy.....thats the key...
Its Ad copy which gets the clicks - Keywords never got clicks..and never well.....
I am not sure what the other poster means. But I think they may be referring to how broad "broad match" really is. I don't think anyone outside of the algorithm developers probably really know what constitutes a "broad match". But if Google makes "broad match" broader, all advertisers on that keyword get more competitors. More competitors usually mean fewer impressions and fewer clicks.
For example say you bid on only the exact match [peach pie]. Google may one day decide that broad match includes all phrases that include either "peach" or "pie". That adds a certain number of advertisers for you to compete with.
Now assume at a different time Google decides broad match for [peach pie] should be broader and expands matches to include any search term with "fruit" or "dessert" in the search term. That would add a bunch more advertisers for you to compete with. So even though you didn't change anything, Google has changed the landscape around you by broadening or tightening broadmatch. Personally I suspect this accounts for a lot of fluctuation in my own results, when I see big spikes or dips in impressions.
my interpretation of the results, however, would include another component not mentioned by jim2003. if google was in fact tightening broadmatch, i would expect this to directly decrease the number of impressions for that keyword. this would happen regardless of increased competition:
That adds a certain number of advertisers for you to compete with.