...And that's a ton of pressure when it's your credit card being billed for every click!
So, here's some important advice from a decade-long veteran of pay per click marketing, and an easy way to boost your profits from your Adwords investment:
A crucial element of Adwords account is how well you have your Adgroups organized.
Don't fall into the oh-so common trap of only creating a couple of adgroups per campaign and then stuffing them with hundreds (or thousands) of keywords.
Save yourself lots of pain and frustration, don't do this!
Trouble in that you're be playing Adwords like an amateur, and end up "rack rate" for your clicks instead of "wholesale", you'll suffer from lower CTR's due to poor relevance of your ads, and most likely you'll be nailed with poor quality scores.
Remember always, "relevance" is the key to unlocking Adwords!
And since it's impossible to write ads that are targeted, specific and "relevant" for hundreds of different keywords all in the same adgroup, you need to "break out" keywords into their own adgroups.
For high-traffic keywords, this could mean one keyword (with the three different match types, broad, phrase and exact) per adgroup, and that's it!
Even for low-traffic keywords "long tail" keywords, have no more than 15-21 keywords per adgroup.
After you "break out" the keywords into new adgroups, notice how much easier it is to write extremely focused ads, using the keyword(s) as much as possible in the ads.
Your click-through rates and ROI will increase almost without fail, along with lowering your per click cost!