[brokenkebab]

It's better to keep in mind that promises of unlimited traffic usually countered by fine text provisions, which your hosting company will invoke once your website starts to be a nuisance for them. Various companies have different levels of tolerance, and actually it's a sort of problem with these "unlimited" offers that you won't know when it hits.

[srrr]

I asked them and for up to 40TB/month it's okay. This is 80000 views of 10 minutes full hd video. The chance that someone gets this popular is quite small.

If you are really really popular investing in a cdn is likely the only solution and for this you need some money, be it from advertising, donations or memberships. But this is the same on Youtube too, only that Youtube does the advertising for you and takes a cut.