Google Refine - How well does it refine????

Google released a new tool - Google Refine last month.. Allows one to deal with messy, inconsistent data...... Most useful capability of this tool being a desktop application... No fear about the trust required to put data on the cloud! But, it comes with a cost.. All the data has to be in RAM for processing, thus limiting the size of data sets to be processed .. It can run via a web browser, provides for cleaning the data, dealing with all inconsistencies... Although the tool has varied capabilities, does it solve the problem of data refining? Yet to use and see..

Here's the video - by Google - how Google refine can be used?
https://code.google.com/p/google-refine/wiki/Screencasts

Link to official blog of Refine :
http://google-refine.blogspot.com/