In this case an image says it all:

Looks familiar? No? I certainly hope this wouldn't happen to you. What happened in all these 3 examples is the start of a well implemented Google Analytics account. Before that the site's owner thought he had a lot of visitors that did a lot of small visits. While the real situation showed him there where a lot less visits, that lasted longer and had more pageviews. But he sold his advertising based on the skewed numbers...

Read more: 5 Google Analytics reports you should check to verify your numbers tell the truth! »

I'm pretty sure a lot of you have dealt with this issue in the past. Someone puts a link on a specific page and after a while they ask you how many clicks it got. But in the main menu and footer are links to the same page also... Google Analytics can only report on how many people went from page A to B, but not which specific link they used.

Take a look at this blogpost:

Read more: How to track multiple links from page A to B in Google Analytics »

A quick post about a new feature Google released quietly: it's possible to raise your site speed sample rate from 10% to 100% if you want. Especially small sites can take advantage of this. How often have you seen this:

A very low sample of pageviews where a page load time calculation is done. This leads to a very bumpy graph in actual page load times. And that is very annoying if you want to analyze your "bring my page load time down" efforts, You can only significantly say something about it if you have at least a week of data. And we all want to see results right away

Read more: Small site? Raise your page load time calculation sample to 100% »

Firefox offers a setting to their user to specifically tell websites that they do not want to be tracked. It's in the "privacy" tab in the "options" menu:

The setting itself doesn't do a thing, it only tells websites they do not want to be tracked. The websites still have to build in code to obey this setting... I did not, for now, and did track those people to see how many people used it. I used this code in my Google Analytics tracking:
Read more: Is the doNotTrack header everyone’s privacy protector? »

Last October Google added a cool feature to their Analytics suite called Goal Flows. That feature is really amazing and helped my find a lot of 'problems' in several sites. Back in the old days we had the old funnel that looked like this:

Problems

It was a very helpful funnel that provided some insights in the way people went through an ordering process. But there were also some huge problems with this funnel:

Read more: Why I love the new Goal Flows in Google Analytics »