Currently ArcGIS Desktop allows you to export the contents of the attribute table only in the below formats.
1) File and Personal Geodatabase tables (default)
2) dBase Table
3) Info tables
4) Text Files
5) File Geodatabase Tables
6) SDE tables
I recently attended an ArcGIS Vendor Training and I noticed that proficient ArcGIS users have to download the text file and manually convert them to csv files to do post-processing work.
It would be great if the export table feature had the option of exporting a .csv file.