Short answers, pulled from the story.
Moda Center opened on the 12th of October 1995. Construction costs totaled $262 million, financed through a combination of $155 million in loans led by pension fund TIAA-CREF, $46 million from Paul Allen personally, $34.5 million from the City of Portland, and a $10 million bond backed by box office and parking revenues.
In August 2013, the Portland Trail Blazers announced a 10-year naming rights deal with Moda Health, an Oregon-based health insurance provider. The change sparked a public petition and drew criticism from Portland mayor Charlie Hales, who called the new name a "head scratcher."
The acoustical cloud is a set of 160 rotating panels suspended from the Moda Center ceiling. Each panel is shaped like an airplane wing, with one face that reflects sound and one that absorbs it. The system cost $2 million to design and install, and is intended to direct crowd noise downward toward the court.
David Bowie performed the first concert at Moda Center on the 25th of October 1995, two weeks after the arena opened, with Nine Inch Nails as the opening act.
The Oregon Arena Corporation filed for bankruptcy on the 27th of February 2004, citing reduced revenues from the local economy that prevented it from servicing the construction loans. The original $155 million loan carried an interest rate of 8.99% with no option for prepayment, leaving no flexibility when revenues fell short. A bankruptcy court ordered the arena transferred to creditors on the 8th of November 2004.
When configured for NBA basketball, Moda Center seats 19,393, with total capacity including standing room reaching up to 20,796. The original capacity was 21,485 at opening, reduced to 19,980 before the 1998 NBA season, and subsequently adjusted to 19,393 through further modifications.