Two Plus Two Older Archives - PF minraiser w/TPTK

50 Ante 200/400 Blinds (25 Minimum Chip)
Average Stack: 18,888.88 (10,000 starting chips)
Remaining Players: 45 (85 started)
Seat 1 : jojodancer starts with 4,225
Seat 2 : 747Fixer starts with 28,975
Seat 3 : smccloud5 starts with 7,000
Seat 4 : roxtar starts with 7,925
Seat 5 : spadesir starts with 9,025
Seat 6 : ladyfromTX starts with 8,075
Seat 7 : captainNdiet starts with 19,125
Seat 8 : SeekingPlumb starts with 14,825
Seat 9 : bignick_13 starts with 15,700
Seat 10 : gimpymason starts with 27,775
Seat 6 : ladyfromTX has the dealer button
>>>DEALING HOLE CARDS<<<
roxtar dealt down Ad Qd

captainNdiet posts the small blind 200
SeekingPlumb posts the big blind 400
bignick_13 folds
gimpymason raises 400 to 800
jojodancer folds
747Fixer calls 800
smccloud5 folds
roxtar calls 800
spadesir calls 800
ladyfromTX folds
captainNdiet folds
SeekingPlumb calls 400
>>>DEALING FLOP<<< [ Qh 5s 4c ]
SeekingPlumb checks
gimpymason checks
747Fixer checks
roxtar bets 2,500
spadesir folds
spadesir was moved to table #3066777
SeekingPlumb folds
gimpymason calls 2,500
747Fixer folds
>>>DEALING TURN<<< [ 9s ]
gimpymason checks
roxtar ?????

This table has been pretty loose. PF raiser has shown down some awfully wierd stuff but also has shown down some pretty good hands that he had played aggressively. He's also shown a couple of bluffs.

I apologize if this hand is pretty elementary. I'm trying to learn, comments on the way this is played would be appreciated. Particularly what you think of the flop bet and what it might mean that he check/called instead of raised on an uncoordinated board such as this.