MultiplAds :
There is no such thing as FREE lunch ! Where do they get the money ? What is their biz model ?
I've just signed up, out of curiousity, and from what I can gather:
1. dot.tk is going to make money by slowly badgering you into paying for your domain. They don't make it clear but it seems you don't really own the free domain so at some point they might hold it hostage unless you pay them.
2. HourB looks like they hold back some features on the free plan but so far I haven't seen any ads. I'll see what happens when I actually put a site there. Something I couldn't find is what the execution time limit is on PHP scripts (typically I've seen 60 seconds but I wouldn't be surprised if the free plan is much more limited than that).
I firmly believe you get what you pay for, so I'm not expecting much from a free domain or a free host. But we'll see. Could be good to test the waters and see what I can actually put together before I put down any money on a hosting service.
Also, I have to see I like HourB's control panel, compared to some of the others I've run across it's not bad.