OFFTOPIC:Free web hosting with PHP, MySQL, Perl, CGI, Ruby

Today I stumbled upon a web hosting (000webhost.com) that claims it's absolutely free.
What it offers looks impressive on first glance, unkess there's a hidden catch.
I just signed in there out of curiosity, and will give it a try these days.

This is what they offer:
- 250 MB of Disk Space
- 100 GB Bandwidth
- Your own domain hosting
- cPanel Control panel
- Over 500 website templates ready for download
- Free POP3 Email Box and Webmail access
- FTP and Web based File Manager
- PHP, MySQL, Perl, CGI, Ruby.
- No Ads at all !