30GB is way too low for a cap in todays modern world.
legitimate content include;
HTTP Surfing, FTP, email, Video streaming (Shoutcast TV, Winamp Videos, MTV videos, movie trailers, game trailers), Linux DVDs, Music download services (Itunes, Napster, Virgin, HMV), Voice over IP, webcams, remote office working, Xbox Live, multiple PCs, distant relatives wanting the video of your summer holiday, managing your NTL web site, future services like BBC1/2 streaming, BBC TV Archive, enhanced mapping services (Google earth streams from the web). Bandwidth becomes even more precious when you have a family of 4/5/6 all with PCs....
It just seems too easy to get near or break the 30GB cap. Especially as that 3MB Itunes file will actually eat more than 3MB into your cap. You could probably add 10-20% onto that figure to allow for all the various network elements (MAC/IP/TCP headers/frame acknowledgements) to get that 3Mb 'payload' to your PC. You could take 10-20% off of that 30GB limit and say that that is your actual usable data allowance.
I don't mind capping but the levels should be set at a fair amount. Even VoIP uses approx 1.3MB a minute at G.711 codec. How many minutes does your household spend on the phone a month? It is the simple things that can eat into your allowance and at present I have no idea what I use...
just my 0.02......
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This is a list of game demos posted on gamespot over the last month...interesting amounts of data.....I am glad I am not a game junkie..
bet on soldier: blood sport single-player demo (download bos_sp_demo_setup.exe now!)
from kylotonn / 553.9mb / posted: 02-sep-2005
blitzkrieg 2 single-player demo (download bk2_singleplayer_demo.zip now!)
from nival interactive / 272.9mb / posted: 02-sep-2005
starship troopers demo (download starshiptroopersdemo.zip now!)
from n/a / 461.0mb / posted: 01-sep-2005 / 17,732 downloads
fifa 06 demo (download fifa06demoen.exe now!)
from ea canada / 219.0mb / posted: 31-aug-2005 / 8,153 downloads
ultima online: mondain's legacy client (download uoml_setup.exe now!)
from electronic arts / 779.7mb / posted: 30-aug-2005 / 352 downloads
gods: land of infinity demo (download gods_loi_demo.exe now!)
from cypron / 271.1mb / posted: 30-aug-2005 / 1,756 downloads
nhl 06 demo (download nhl06demo.exe now!)
from ea canada / 279.7mb / posted: 29-aug-2005 / 5,376 downloads
delaware st. john volume 1: the curse of midnight manor demo (download dsjv1demo.exe now!)
from bigtime games / 139.1mb / posted: 26-aug-2005 / 1,018 downloads
myst v: end of ages demo (download mystvdemo.exe now!)
from cyan worlds / 276.4mb / posted: 23-aug-2005 / 19,863 downloads
dark age of camelot 14-day trial (download daoc_14-day_trial_setup.exe now!)
from mythic ent / 1.9gb / posted: 22-aug-2005 / 13,950 downloads
nibiru: age of secrets demo (download nibirudemoen1-2.exe now!)
from future games / 143.0mb / posted: 19-aug-2005 / 8,039 downloads
squad assault: second wave demo (download saswdemo.exe now!)
from freedom games / 122.5mb / posted: 18-aug-2005 / 4,602 downloads
myst v: end of ages demo (mac) (download myst_v_demo.sitx now!)
from cyan worlds / 468.2mb / posted: 18-aug-2005 / 863 downloads
land of legends demo (download lol_setup_demo.exe now!)
from tiny hero / 68.5mb / posted: 17-aug-2005 / 1,257 downloads
gt legends demo (download gtlegends_demo.exe now!)
from simbin / 269.0mb / posted: 17-aug-2005 / 20,041 downloads
the star and the crescent demo (download tsatcdemo.zip now!)
from prosim / 48.6mb / posted: 16-aug-2005 / 784 downloads