Aaron Wall, the man behind the curtain at SEOBook, has updated one of his ultra helpful tools for your PPCers out there. The tool, called Bad Keyword and Number Stripper, will help you take those long keyword lists you pull from services like Wordtracker and scrub them for keywords and numbers that you don’t want included. As someone who has hand-scrubbed countless keyword lists, I highly recommend using an automated solution like Aaron’s.

Using the tool is pretty simple. First, make sure you have a keyword list. Second, go to the stripper tool’s site. Third, enter your keyword list into the “keyword list” section. Next, enter in keyword terms that you don’t want included in your list. This could include numbers, or off topic words (like “cattle insurance”), or swear words (like…well you know them). In our case, this could also mean trademarked terms that we don’t bid on like AARP, GEICO, Gerber, and GMAC. Once you have them all entered, you hit the “Clean Me Up, Scotty” button (nice touch) and viola! You have a clean keyword list.

Big ups to Aaron for providing this tool, and thanks to Danny Sullivan for pointing out the tool on the Daily Searchcast.

[Semi-related but unrelated note: Make sure you listen to yesterday’s Daily Searchcast – Matt Cutts co-hosts with Danny – pretty cool.]