binaryslate

Been doing a bit of analysis on adwords reports recently and happened upon this handy tidbit in the help section

Reports over 100 megabytes (mb) in size can be downloaded in .xml format only. We recommend splitting reports of this size into multiple smaller reports covering fewer keywords and/or shorter date ranges, which can then be viewed in all formats.

I finally this slightly odd. If I were to take 100mb of ascii data as a csv it’s going to be mostly data and maybe a few kb for the commas. On the other hand if I take 100mb of data as xml it’s going to be an extra 60mb or so for all the tags. They do zip the files before they are dished out so I suppose it’ll compress just as well but still it’s a bit crazy logic.