free hosting service taking bits of my files away???

[chopficaro]

so i thought id like to make one of those browser games people play where u build something and it takes 3 days, and users attack each other and such...

i needed something with accounts so i thought id take some php open source forum software, reverse engineer it, and turn it into a game (easier said than done)

so i got one called chipmunk forums, decided to upload it to make sure it worked, but when i did, i noticed that every file that i uploaded became smaller! look:
http://img198.imageshack.us/img198/4718/differentfilesizes.png

now maybe i can possibly imagine my less than reputable free hosting service adding something to all my files, but what in the hell did they take away?!?!

[chopficaro]

hmmmm... ive been reading up on how to do this sort of thing and its a much bigger project than i expected. what i need is a very very very well commented piece of php. i need to read through every file and understand everything, and then i can add some files to it but only when i understand everything can i do it. i heard vBulleten and phpBB are reputable open source forums. does anyone have a suggestion? i need the one that is the easiest to reverse - engineer (and i use the term easy lightly)

[meesa]

Edit the files from the webserver. Is anything missing? It's possible they may slightly compress it.