Here's a tip I learned from an online marketer that should help anyone looking to get their name out for an online portfolio or website.
On Google people are engaged in a bidding war for the top search ads. This bidding war results in a huge CPM. This is why for most people the return on your advertising dollars isn't worth it when you buy search ads at Google.
Instead, his recommendation was to look at search ads on Bing when looking to do keyword-specific advertising. The ads on Bing look less like ads, and they are a lot cheaper to buy because there's less of an "idiot bidding war."
The search volume on Bing is lower, so you won't be getting as much traffic as Google can bring all at once, but it's a lot cheaper and more efficient in the long run.