Effectively tracking site visitors is extremely important for gathering accurate site-activity metrics. Over the last few years, cookies have gotten almost as bad a reputation as the more well-known chocolate chip variety (my personal favorite) have among the diet conscious. The former has a reputation for invading privacy; the latter for expanding waistlines. [ClickZ]

The free keyword research options are great. You can develop an amazing campaign with free resources, but sometimes you just need more keyword research. If you missed earlier columns on the free keyword research tools and log files, start there, then return to this column. Today we'll focus on paid keyword research tools and resources. Many go far beyond keyword research and into the competitive intelligence. [ClickZ]