Hey good to see you again, MJ! It' s nice to know I've got some readers for my uber long posts ;)
If you're aware of anything else that should make the list, please drop a note.

NTS: PlayerAuctions account trade system (searchable, etc. just like other account sites)

NTS: PlayerAuctions price graduation system

NTS: PlayerAuctions description tips for wow accounts

NTS: Sparter (Carefully examine how they were originally set up to identify any industry firsts which they had such as showing average delivery speed of sellers, being able to filter search results by details such as speed or service quality ratings, etc.)

NTS: Start getting interviews. e.g. Mike from mmobay, Shane from MC, Marcus, etc.

NTS: Check the auction script from mmobay to see if there were any firsts there, it was well modified.

NTS: PA first strong and comprehensive tumbling checks

NTS: Put trustwho into separate post?

NTS: Get research links from other sites, e.g. 'the truth about IGE' blog

NTS: Interview J.P. of CS

NTS: Poll Chinese community

NTS: Glider as first commercially available wow bot

NTS: Botting as an insider community, the early beginnings at lavishsoft

NTS: First key broadcasting software (hardware no more)

NTS: First broadcasting botter (6 shaman), made top 3% in BG

NTS: Lavishsoft firsts (e.g. screen tiling), bots for given games, etc.

First price scraper and price comparison website

First price comparison website which was actually owned by an RMT site purely for marketing purposes

EQ first in game spam

WOW first in game spam + law suit

First bot related suit (blizzard vs MDY)

First Warden client (bliz)

WTTMMO was the first forum to employ automated verification of a telephone number to verify members prior to giving them access to post in the trade section. Absolute genius.

PlayerAuctions.com was the first 'trade platform' to employ the same technology. When the site was bought out and redone from the ground up, they actually consulted with one of the world's foremost experts on online payment security: a guy that worked with PayPal, Google Checkout, and finally set up a consulting business.

Surprising, not even ebay verifies phone numbers. The RMT industry can be VERY cutting edge (years ahead) when it comes to security and practical trade based innovations. (more on innovations later.)

PlayerAuctions.com - First site to employ the use of LSOs (Flash cookies) or use device fingerprinting technology as a part of their layered security approach.

It wasn't until two years later that a forum ever used LSOs (mmobay.net, through an addon).

Both LSOs and device fingerprinting are already going the way of the dinosaur as all next versions of browsers will offer users very tight control over Flash and have pretty much everything set to 'no' by default.