Am I pushing some marginal hands? Am I folding too soon?

Hand 1

Seat 1: Phi040320 ($104.86 in chips)
Seat 2: briachek ($106.50 in chips)
Seat 3: Achil2807 ($41.25 in chips)
Seat 5: Jere29012 ($71.25 in chips)
Seat 6: 01104305 ($87.75 in chips)
Seat 7: nigelpc3 ($40.75 in chips)
Seat 8: Vapman ($21.87 in chips)
briachek: posts the ante $0.25
Vapman: posts the ante $0.25
Phi040320: posts the ante $0.25
Jere29012: posts the ante $0.25
01104305: posts the ante $0.25
Achil2807: posts the ante $0.25
nigelpc3: posts the ante $0.25
----- 3rd STREET -----
dealt to Phi040320
dealt to briachek [Kh Qc As]
dealt to Achil2807
dealt to Jere29012
dealt to 01104305
dealt to nigelpc3
dealt to Vapman
nigelpc3: brings-in $0.50
Vapman: calls $0.50
Phi040320: folds
briachek: raises $1
Achil2807: folds
Jere29012: folds
01104305: folds
nigelpc3: calls $0.50
Vapman: calls $0.50
----- 4th STREET -----
dealt to briachek [Kh Qc As][2c]
dealt to nigelpc3 [Qd]
dealt to Vapman [Qs]
briachek: bets $1
nigelpc3: calls $1
Vapman: calls $1
----- 5th STREET -----
dealt to briachek [Kh Qc As 2c][7c]
dealt to nigelpc3 [2s Qd][Kc]
dealt to Vapman [3d Qs][8h]
briachek: bets $2
nigelpc3: calls $2
Vapman: calls $2
----- 6th STREET -----
dealt to briachek [Kh Qc As 2c 7c][Jh]
dealt to nigelpc3 [2s Qd Kc][8c]
dealt to Vapman [3d Qs 8h][5c]
briachek: checks
nigelpc3: checks
Vapman: checks
----- RIVER -----
dealt to briachek [Kh Qc As 2c 7c Jh][Td]
briachek: bets $2
nigelpc3: folds
Vapman: folds
Returned uncalled bets $2 to briachek
briachek: doesn't show hand
briachek collected $13.25 from Main pot

Loose raise on 3rd? Give up earlier? I know I got lucky and wasn't sure what to do if someone bet into me on 6th.

Hand 2

Seat 2: Medusa2 ($15.75 in chips)
Seat 3: tnnjohn2 ($24.25 in chips)
Seat 4: briachek ($70.50 in chips)
Seat 6: Bebert001 ($53.25 in chips)
Seat 7: Kookykat ($40 in chips)
Seat 8: yellowj ($29.75 in chips)
briachek: posts the ante $0.25
Medusa2: posts the ante $0.25
yellowj: posts the ante $0.25
Kookykat: posts the ante $0.25
tnnjohn2: posts the ante $0.25
Bebert001: posts the ante $0.25
----- 3rd STREET -----
dealt to Medusa2
dealt to tnnjohn2
dealt to briachek [5s 7s 4s]
dealt to Bebert001
dealt to Kookykat
dealt to yellowj
tnnjohn2: brings-in $0.50
briachek: calls $0.50
Bebert001: folds
Kookykat: calls $0.50
yellowj: calls $0.50
Medusa2: folds
----- 4th STREET -----
dealt to tnnjohn2 [4c]
dealt to briachek [5s 7s 4s][7h]
dealt to Kookykat [4h]
dealt to yellowj [Ah]
yellowj: bets $1
sirsas joins the table at seat #1
tnnjohn2: folds
briachek: calls $1
Kookykat: calls $1
----- 5th STREET -----
dealt to briachek [5s 7s 4s 7h][5c]
dealt to Kookykat [5h 4h][Qs]
dealt to yellowj [Jh Ah][8c]
yellowj: bets $2
briachek: raises $4
Kookykat: folds
yellowj: calls $2
----- 6th STREET -----
dealt to briachek [5s 7s 4s 7h 5c][2c]
dealt to yellowj [Jh Ah 8c][9s]
yellowj: checks
briachek: bets $2
yellowj: calls $2
----- RIVER -----
dealt to briachek [5s 7s 4s 7h 5c 2c][9c]
yellowj: checks
briachek: bets $2
yellowj: calls $2
----- SHOW DOWN -----
briachek: shows [7s 7h 5s 5c 9c 4s 2c] (Two Pairs, Sevens and Fives, Nine high)
yellowj: shows [As Ah Tc Ts Jh 9s 8c] (Two Pairs, Aces and Tens, Jack high)
yellowj collected $21.50 from Main pot

Raising with a marginal hand. I know I shouldn't have bet the river, but other than that?

Hand 3

Seat 1: mschlegel ($98.75 in chips)
Seat 2: briachek ($126.75 in chips)
Seat 3: Katsumoto ($47 in chips)
Seat 4: Alis03122 ($313.26 in chips)
Seat 5: lclee ($409 in chips)
Seat 6: 01104305 ($86.50 in chips)
Seat 7: Jedburgh ($92.75 in chips)
Seat 8: rkayn ($96.25 in chips)
briachek: posts the ante $0.25
Katsumoto: posts the ante $0.25
rkayn: posts the ante $0.25
lclee: posts the ante $0.25
01104305: posts the ante $0.25
mschlegel: posts the ante $0.25
Alis03122: posts the ante $0.25
Jedburgh: posts the ante $0.25
----- 3rd STREET -----
dealt to mschlegel
dealt to briachek [Kh 9d Ks]
dealt to Katsumoto
dealt to Alis03122
dealt to lclee
dealt to 01104305
dealt to Jedburgh
dealt to rkayn
lclee: brings-in $0.50
01104305: calls $0.50
Jedburgh: calls $0.50
rkayn: folds
mschlegel: folds
briachek: raises $1
Katsumoto: folds
Alis03122: calls $1
lclee: folds
01104305: calls $0.50
Jedburgh: calls $0.50
----- 4th STREET -----
dealt to briachek [Kh 9d Ks][Th]
dealt to Alis03122 [Ad]
dealt to 01104305 [8c]
dealt to Jedburgh [Qh]
Alis03122: checks
01104305: checks
Jedburgh: checks
briachek: bets $1
Alis03122: calls $1
01104305: calls $1
Jedburgh: calls $1
----- 5th STREET -----
dealt to briachek [Kh 9d Ks Th][6d]
dealt to Alis03122 [7d Ad][Ts]
dealt to 01104305 [5s 8c][7s]
dealt to Jedburgh [5c Qh][9h]
Alis03122: checks
01104305: checks
Jedburgh: checks
briachek: bets $2
Alis03122: calls $2
01104305: raises $4
Jedburgh: calls $4
briachek: folds
Alis03122: calls $2
----- 6th STREET -----
dealt to Alis03122 [7d Ad Ts][4h]
dealt to 01104305 [5s 8c 7s][6h]
dealt to Jedburgh [5c Qh 9h][Qs]
Jedburgh: checks
Alis03122: checks
01104305: checks
----- RIVER -----
Jedburgh: bets $2
Alis03122: calls $2
01104305: calls $2
----- SHOW DOWN -----
Jedburgh: shows [Qh Qs 8s 8d Js 9h 5c] (Two Pairs, Queens and Eights, Jack high)
Alis03122: mucks hand
01104305: mucks hand
Jedburgh collected $29 from Main pot

Fold too weak?

Hand 4

Seat 1: mschlegel ($98.50 in chips)
Seat 2: briachek ($122.50 in chips)
Seat 3: Katsumoto ($46.75 in chips)
Seat 4: Alis03122 ($305.01 in chips)
Seat 5: lclee ($408.25 in chips)
Seat 6: 01104305 ($78.25 in chips)
Seat 7: Jedburgh ($113.50 in chips)
Seat 8: rkayn ($96 in chips)
rkayn: posts the ante $0.25
briachek: posts the ante $0.25
Katsumoto: posts the ante $0.25
01104305: posts the ante $0.25
lclee: posts the ante $0.25
mschlegel: posts the ante $0.25
Alis03122: posts the ante $0.25
Jedburgh: posts the ante $0.25
----- 3rd STREET -----
dealt to mschlegel
dealt to briachek [Qh Kd Tc]
dealt to Katsumoto
dealt to Alis03122
dealt to lclee
dealt to 01104305
dealt to Jedburgh
dealt to rkayn
mschlegel: brings-in $0.50
briachek: raises $1
Katsumoto: folds
Alis03122: raises $2
lclee: folds
01104305: calls $2
Jedburgh: folds
rkayn: calls $2
mschlegel: folds
briachek: calls $1
----- 4th STREET -----
dealt to briachek [Qh Kd Tc][Kh]
dealt to Alis03122 [Ts]
dealt to 01104305 [4s]
dealt to rkayn [Qs]
briachek: checks
Alis03122: bets $1
01104305: calls $1
rkayn: calls $1
briachek: raises $2
Alis03122: raises $2
01104305: folds
rkayn: calls $2
briachek: calls $1
----- 5th STREET -----
dealt to briachek [Qh Kd Tc Kh][As]
dealt to Alis03122 [8h Ts][2d]
dealt to rkayn [Jh Qs][Js]
rkayn: bets $2
briachek: calls $2
Alis03122: raises $4
rkayn: raises $4
briachek: folds
Alis03122: raises $4
rkayn: calls $2
----- 6th STREET -----
dealt to Alis03122 [8h Ts 2d][5h]
dealt to rkayn [Jh Qs Js][9d]
rkayn: checks
Alis03122: bets $2
rkayn: calls $2
----- RIVER -----
rkayn: checks
Alis03122: bets $2
rkayn: raises $4
Alis03122: raises $4
rkayn: raises $4
Alis03122: raises $4
rkayn: calls $2
----- SHOW DOWN -----
Alis03122: shows [2s 2c 2d Ah Ts 8h 5h] (Three of a kind, Twos, Ace high)
rkayn: shows [Qc Qd Qs Jh Js 9d 7d] (A Full House, Queens full of Jacks)
rkayn collected $59.50 from Main pot

Often this guy was a maniac and as soon as he raised, i knew i was trapped and just got out. THe guy started with pocket 2's and happened to pick up trips later. WTF was he doing?

Is hand #2 a joke? It's a joke right?

thanks, i guess and pay attention!