After reviewing the new Twitter ToS (http://dev.twitter.com/pages/api_terms) published on March 17, 2011, I have decided to bring the “Save as Excel” link back online when viewing an archive.
This will allow you to get the currently viewed content into an Excel file for review.
While it doesn’t replace the “Export and Download” feature completely (which could extract very large datasets), it will give you the ability to download smaller data sets, which is very useful for conference / chat transcripts, etc.
And remember you can change the view from different time periods to get different data sets.
Let us know if you have any questions.