Anyone Use 000WebHost

i reciently signed up for 000WebHost they seem really good at first glance.

actually too good.

their a free host, with 250mb of space, 100gb transfer, 5 mysql db's, and full php/pearl etc access.

It just sounds too good to be true, there are paid hosts out there that only give 20gb or less of transfer!

is there a catch? has anyone here been using them for a reasonable amount of time?