I would be very interested to learn which site the list of usernames and passwords was hacked from. If your account was compromised and you only used the same account details on a few other sites, please list those other sites here so we can see if a pattern emerges.
I PM'ed one user who I saw had been compromised by the attacker. He replied:
BTC-sites I can think of that have the same pw (though not necessarily the same login-name) are Bitcointalk, BTCT, Havelock and Bitfunder.
So there's datapoint 1.
Anyone else?
You may be wondering "was my account compromised?" Well, here's a list of compromised userids:
983
2018
2436
2828
3095
3258
3481
4259
6700
8509
8606
8660
8815
9825
9895
10167
11303
12326
12732
34054
34490
36411
38924
43386
44554
46462
48038
48131
48640
48781
56101
57228
58436
61376
64827
67755
69701
69908
70295
71528
74347
78524
79308
79539
80125
83971
84543
84943
94532
98378
103149
103388
105449
107711
112714
115375
116667
119688
120272
121724
122727
127888
134617
135093
136202
148465
157053
157854
181501
182131
If one of these is yours, please tell me where else you used your JD password.