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Today, Google Maps Navigation became available in The Netherlands. Since I have an Android phone (a G1 with Android 2.1 which is actually really slow, but that's another topic) and because I think this will be a hit feature for Android I was eager to give it a try. When you fire it up for the first time though, you get a pop-up agreement shown here on the right. I have a Dutch version of the software, but the translation of the second sentence is: "Don't use this application while driving"...
Recently I've seen some (often absolute) statements going around, generally in the line of "open source commerce platforms are a terrible idea". Now of course different solutions always have different pros and cons.
A hierarchy of evidence (or levels of evidence) is a heuristic used to rank the relative strength of results obtained from scientific research. I've created a version of this chart/pyramid applied to CRO which you can see below. It contains the options we have as optimizers and tools and methods we often use to gather data.
