Gosh, if I had even half of the wasted Adwords and Yahoo Search Marketing money flowing each day I’d be blogging from some exotic locale in the sun! I think that just having someone LOOK at your PPC campaign for an hour is probably one of the best-spent consulting values out there. Trouble is, few in the business are good at recognizing problems.
Look for overly generic keywords.
Look for poorly written ads without a sales proposition.
Look for poor quality landing pages.
Look for keywords that overlap with generic searches.
There is no more rewarding results than to help get a PPC account out of bleed mode by spending a couple of hours solving these basic issues.