I dont think they would literally require 10 btc to recognise a donator but also they dont want to devalue the previous donators contribution either as they certainly opted to donate 10 BTC not keep it till now with its higher value.
Companys contribute via paid advertising. Its done via an auction I think
Now a month of hosting will be worth about 0.01btc.
Really nice to see the list of people that really mad this forum going live, we couldn't survive without those early donators.
I think that the forum should be reopening the donation section, even without offering a special title, some people want to donate as a support to the forum and they can't.
There is the
copper rank for a much smaller amount (to me it shows up as 1/5th of the amount you mention). This link is personal to each account apparently:
https://bitcointalk.org/index.php?action=credit;promote