I am currently on this plan (on a Nexus 4), and it works quite well for me. There's also a 100 minutes talk time limit on the plan, with 10C per minute for extra talk time.
Hmm looking at my recent statements, I'm always between like 150 and 375 minutes, so even with the 10c per minute extra, I'd never be looking at more than $60/month at worst. I'm assuming nights and weekends still don't count as minutes on this plan?
There are no free nights and weekends with this plan.
Everything counts, but you can be strategic about usage - dialing via Google Voice from a laptop keeps me well under 100.
Never assume. Always read the contract language carefully.
Sorry, I used confusing language there. It was meant as a question for people who have the plan. There are scant details about the plan on the website.