I've tried a couple of free web hosting companies, most of them have files size/format restriction, then, i finally find this one and i'm happy so far- www.frihost.org

Frihost free web hosting features

* 250 Mb of space for your entire collection of websites.
* 10 GB of traffic each and every month.
* 1 short free subdomain to be reachable in the whole world (you.frih.net).
* Php and Perl scripting languages to fulfill all your programming needs.
* The DirectAdmin control panel to manage your web hosting account.
* No forced advertisements. Your own ads like google adsense are allowed.
* Unlimited MySQL databases for all your data.
* Unlimited subdomains and ftp accounts of all your domains.
* Unlimited email accounts for your correspondence.
* Unlimited parked and addon domains for your whole portfolio of websites.
* Great community forums of over 500,000 posts and over 25,000 members to get support from.


The only thing you need to do before requesting a free hosting account is to post 5 posts in their forum, also, you need to remain active in their forum in order to keep that account. But I find it quite easy to do since their forum includes all sort of topics, you could talk about almost anything there, so, ENJOY!