[Android General] Fnorder:
It doesn't seem to send anything with every page/action, but it faithfully phones home on every startup, and sends your IMEI (xxx) and two different unknown id's (yyy) (zzz) to mm.maxthon.com and stats-a.maxthon.com:

T 10.23.1.220:56800 -> 107.20.218.194:80 [AP] GET /mxbrowser/update.jsp?source_type=mobile&channelid=(yyyyyyyyyy)&revision=4255&version_code=2796&language=en&country=US&update_version=1&imei=(xxxxxxxxxxxx) HTTP/1.1!!Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8!!User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.0.3) Gecko/2008101315 Ubuntu/8.10 (intrepid) Firefox/3.0.3!!Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7!!Accept-Encoding: gzip,deflate!!Host: mm.maxthon.com!!Connection: Keep-Alive!!!!

T 10.23.1.220:56532 -> 60.28.209.109:80 [AP] GET /phone-1/online?imie=(xxxxxxxxxxxx)&ver=2.3.2&lan=en&loc=US&pn=(yyyyyyyyyy)&sys=2.2.1&devid=1&vv=1.2&vrf=(zzzzzzzzzzzzzzzzzzzzzzzzzzzzzz) HTTP/1.1!!Host: stats-a.maxthon.com!!Connection: Keep-Alive!!User-Agent: Apache-HttpClient/UNAVAILABLE (java 1.4)!!!!

This is despite unchecking 'check for updates'.

In addition, it uploads a zipped 'mxstatistics.txt' (which it seems to delete afterwards):

T 10.23.1.220:36720 -> 184.73.221.34:80 [AP] POST /upload.html HTTP/1.1!!connection: Keep-Alive!!charset: UTF-8!!content-type: multipart/form-data;boundary=******!!User-Agent: Dalvik/1.2.0 (Linux; U; Android 2.2.1; SPH-D700 Build/FROYO)!!Host: data-android.maxthon.com!!Content-Length: 420!!!!--******!!Content-Disposition: form-data; name="file"; filename="mxstatistics.zip"!!!!PK!!!!!!!!!H[?!!!!!!!!!!!!!!!!/!!PK!!!!!!!!!!!!!!PK!!!!!!!!!H[?!!!!!!!!!!!!!!!!mxstatistics.txt!!!!!0!D!^p!!!!!!!!t!7!G!u!!!!!!!<SJbrl!!!!0@!B!!!(!!!\!q?!N!!!!!!!!!!!!!>!!!!PK!!PLl!N!!!!!!!PK!!!!!!!!!!!H[?!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!/PK!!!!!!!!!!!H[?PLl!N!!!!!!!!!!!!!!!!!!!!!1!!!mxstatistics.txtPK!!!!!!!!!!m!!!!!!!!!!!--******--!!

Also, mm.maxthon.com gives it orders:

T 107.20.218.194:80 -> 10.23.1.220:56800 [A] HTTP/1.1 200 OK!!Date: Thu, 27 Oct 2011 14:07:42 GMT!!Server: Apache/2.2.20 (Unix) PHP/5.3.8!!X-Powered-By: PHP/5.3.8!!Content-Length: 1819!!Keep-Alive: timeout=5, max=100!!Connection: Keep-Alive!!Content-Type: text/html!!!!<?xml version="1.0" encoding="utf-8"?><update><resource><item version="44" url="http://mm.maxthon.com/resource/navigation/navigation2.xml" name="navigation" /><item version="28" url="http://mm.maxthon.com/resource/newnavigation/newnavigation1.html" name="newnavigation" /><item version="1" url="http://mm.maxthon.com/resource/topsites/topsites2.json" name="topsites" /><item version="1" url="http://mm.maxthon.com/resource/rss/rss2.xml" name="rss" /><item version="3" url="http://mm.maxthon.com/resource/rsshelp/rsshelp2.xml" name="rsshelp" /><item version="7" url="http://mm.maxthon.com/resource/quickdial/quickdial8.xml" name="quickdial" /><item version="13" url="http://mm.maxthon.com/resource/skin/skin11.xml" name="skin" /><item version="49" url="http://mm.maxthon.com/resource/addons/addons2.xml" name="addons" /><item version="14" url="http://mm.maxthon.com/resource/applist/applist2.xml" name="applist" /></resource><configuration>!! <item key="gate" value="http://www.google.com/gwt/n?u=%target%"/>!! <item key="gate.src_param" value="u"/>!! <item key="help" value="http://mm.maxthon.cn/mxbrowser/help/help_en.html"/>!! <item key="banner.show" value="false"/>!!<item key ="sign.url" value="http://mm.maxthon.cn/mxbrowser2/checkin4/wap-mdpi.php?imei=%imei%&country=%country%"/>!!<item key="server_collect_flag" value="true" option="override"/>!! </configuration>!!!! <version>!! <item version="2795" autoupdate="true" url="http://dl.maxthon.com/mobile/Maxthon_for_Android.apk" name="browser"></item>!! <item name="message" url="http://mm.maxthon.com/resource/alertwindow/2795_mobile_EN.txt"></item>!! </version>!! <notification>!! <item version="-2" url="http://mm.maxthon.com/resource/alertwindow/2789_mobile_EN.txt"></item>!! </notification></update>

In this case, ngrep -P '!' -lq -R -W single -M '.' "tcp port 80"

ngrep can be found in optware, which has an android port at http://nookdevs.com/Optware_for_Android which -will- need to be modified to work on your device (unless it's a nook)