May I ask for an http packet capture analysis?

For more information, see <g id = "1"> http packet capture </g>? HTTP/1.20. OK \ r \ n returned after act = loginHTTP/1.1 \ r \ n sets the cookie as follows: ECS_ID = 0a229 ask for an http packet capture analysis
I used wireshark to capture packets. I cannot understand the cookie problem:

When GET/user. php? Act = login HTTP/1.1 \ r \ nReturned HTTP/1.1 200 OK \ r \ nThe cookie is set as follows:
ECS_ID = 0a22939846734023b5b1dfd98de4d0f28230d386; path =/
ECS [visit_times] = 1; expires = Sun, 07-Oct-2012 17:39:28 GMT; path =/
After GET/captcha. php? Is_login = 1 & 2132503621 HTTP/1.1 \ r \ n cookie is:

Cookie: ECS_ID = Hangzhou; ECS [visit_times] = 1; cnzz_a2408473 = 0; sin2408473 =; rtime = 0; ltime = 1318124382171; cnzz_eid = 55038762-1318120773; _ utmb = 17458850.1.10.1318124382; _ utmc = 17458850; _ utmz = 17458850.1318124382.1.1.utmcsr = (direct) | utmccn = (direct) | utmcmd = (none)

I don't know where the cookie came from. please give me some advice! Thank you!
PS: The score is not much, but the score is only 52. Thank you!

------ Solution --------------------
Clean professionals, one library, one library...
Discussion

Reference:

Wordy
Reference:

There are a total of three categories, one for google, one for cnzz, and the other for ecshop. besides the cookies of the system, the other two categories are used for statistical analysis.
Smiday