Was looking at http://SeatCounter.com, regarding upgrade availability, and was wondering if anyone has benefited from that site? I didn't understand the "Availability by Booking Class" info. So I found the following from the United Forum. How similar are these ticketing codes compared to those of ANA?

A = Discounted Fare First Class. Round The World First is booked in this class.
B = Almost Full Fare Economy with minimal restrictions - also used Star * RTW
C = Full Fare Unrestricted Business Class
D = Discounted Fare Business - used also on all "Business" Class Star RTW fares
E = 'Ted' and some low web/discount fares from early 2005. Now officially elevated to above H class!
F = Full Fare Unrestricted First Class
G = Travel Industry Economy Class fares
H = Higher level Economy Class with few restrictions. Some "RTW" coach is H
I = Business Class Upgrade class from Economy (Better known as 'NC' class)
K = Seasonal Economy Promotional Fares/Reduced Fare Gov’t contract etc
L = Discount Fare Economy with a lot of restrictions
M = Almost Full Fare Economy with few restrictions
N = Economy Class AWARD TICKET (Better known as 'XY' class)
O = Business Class AWARD TICKET (Better known as 'XC' class)
P = Premium USA Transcon First Class on 3 classers
Q = Discount Economy with moderate restrictions. (Bereavement tix are in Q)
R = First Class AWARD TICKET (Better known as 'XF' class)
S = Real Lowball coach with lot of restrictions. Reports that some are not mile earning ex UK/Brazil etc.
T = Heavy discount Fare Economy - often with a lot of restrictions
U = Showed up Nov/03 as booking class for "TED" also in mid 2005 a high level mainline class!
V = Discount Fare Economy often with a lot of restrictions
W = Discount Fare Economy often with many restrictions
X = First Class UPGRADE AWARD from paid Business* (Better known as 'NF')
Y = Full Fare unrestricted Economy class
Z = Heavily discounted Business Class - generally NOT "legally" upgradeable.

Cheers!