Since the current TMD archive is down, I found the cache so folks can read all of the metagame reports that have ever been generated.
For ease of use, I've compiled them all here:
2017:
May: http://themanadrain.com/topic/1245/mtgo-vintage-metagame-report-may/
2016:
Q1:
http://www.themanadrain.com/topic/476/vintage-metagame-report-april-to-june
2011
Q1: http://www.starcitygames.com/article/21723_The-Long-And-Winding-Road---The-Q1-Vintage-Metagame-Report.html
2010
Q4 Report: http://www.starcitygames.com/magic/vintage/20884_The_Long_and_Winding_Road_The_Q4_Vintage_Metagame_Report.html
2010-05-03 So Many Insane Plays – The Q1 2010 Vintage Earnings and Market Report
2010-02-22 So Many Insane Plays – The Vintage Market Report
2009
2009-09-21 So Many Insane Plays – Vintage/Legacy Split Article
2009-08-04 May/June 2009 LARGE-scale Metagame Report
2009-07-28 May/June Small-scale Metagame Report
2009-05-11 So Many Insane Plays – The Most Dominant Engine in Vintage History: The March/April Vintage Metagame Report
2009-03-16 So Many Insane Plays – Reflections on Chicago / The Jan-Feb Vintage Metagame Report
2009-01-19 So Many Insane Plays - Restrict Mana Drain? The November-December Metagame Report
2008
2008-11-10 So Many Insane Plays – What’s Winning in Vintage? The September/October Vintage Metagame Report
2008-09-22 So Many Insane Plays – Walking Through the Ruins of the Vintage Apocalypse
2008-07-21 So Many Insane Plays –The May/June Vintage Metagame Report
2008-06-16 So Many Insane Plays – The March/April Vintage Metagame Report
2008-03-17 So Many Insane Plays - The Jan-Feb Vintage Metagame Report
2008-01-02 So Many Insane Plays – Rounding Out The Vintage Year
2007
2007-11-07 So Many Insane Plays - Vintage By The Numbers
2007-08-15 So Many Insane Plays - Figures Don’t Lie, But Liars Figure: A Vintage Metagame Report
2005
2005-06-30 May-June Type One Metagame Breakdown
2005-06-01 April Type One Metagame Breakdown
2005-05-02 Vintage Metagame Breakdown: March
2005-03-14 As Much Info As You Can Handle - The Jan-Feb Vintage Metagame Report
2005-03-04 Functional Breakdown of Vintage Cards From Dec-Jan
2005-02-14 The December and January Vintage Metagame Report
2004
2004-12-10 Oct-Nov Vintage Metagame Summary
2004-12-02 Examining the Vintage Metagame - Analysis of The Ultimate Table, Part Deux
2004-11-08 Examining the Vintage Metagame - Analysis of The Ultimate Table
2004-10-12 The September Vintage Metagame Breakdown
2004-09-13 The August Vintage Metagame Breakdown
2004-08-20 The July Metagame Update and The Crucible Effect
2004-07-26 The June Vintage Metagame Breakdown
2004-07-02 April-May Type 1 Potpourri
2004-06-23 May Metagame Breakdown
2004-06-15 September to April, Part 2
2004-05-28 September to April: There and Back Again for Type One
2004-05-06 The April Type One Metagame Breakdown
2004-04-14 March Type One Potpourri
2004-04-06 March Metagame Breakdown for Type I
2004-03-25 All Request Live For Type One
2004-03-15 February Type One Potpourri
2004-03-08 February Type One Metagame Breakdown
2004-03-03 All The Little People - Metagames for Small Vintage Tournaments
2004-01-21 Designing Cards For Vintage, Part 2: And Most Popular Cards In Type I Are...
2004-01-13 Number Crunching Type I: Designing Cards For Vintage
2004-01-02 Number-Crunching Type 1 for 2003
The data is quite rich, and I have even more data I've accumulated over time in my personal files.
If you can't find any of those articles, they are all hyperlinked on the cache.