In case anything needs clarification.

Enter this field if you'd like to enter the competiton.

This'll show how much experience people have had with hosting.

Just a general indicator of how happy you are/were with this host.

The odd bit of scheduled maintainence shouldn't be an issue; it's continued sites up and down that should constitute trouble with downtime.

If you've got any WordPress specific examples, ie "I had this issue, they did this to solve it/not solve it and took this long."

Anything extra you'd like to add? Extra thoughts will be really useful in determining who's just been unlucky and which hosts are genuinely bad.