Whatsapp competitor Telegram is promising that. Not sure if it's legally binding though. (They're also saying that they're not "commercial company").
"Telegram is not intended to bring revenue, it will never sell ads or accept outside investment. It also cannot be sold. We're not building a “user base”, we are building a messenger for the people."
In some cases you won't even recognize Bootstrap. For example YC-company https://kippt.com/ uses Bootstrap, but wouldn't guess it without knowing it.
Anyway, I think Bootstrap default theme (or slightly modified, but recognizable) is alright for young products targeted to "normal" people who have no idea about Bootstrap. I think it matters more for developers and designers and products targeted for them should invest in creating custom theme.
I did freelancing and some of my friends did some SEO and quite good amount of money with Adsense etc when they were teenagers.
But if you don't really need much money (I didn't when I was teenager, but of course this was only me), I would rather use the time to learn and explore new things and have fun. Of course if you can combine earning money and learning new things, its great.
You could bypass restrictions (not sure if it affects your grade though or count having a database) by using some existing external APIs and build a web-software on top of them.
We used Skype before and weren't happy, but we just changed to https://www.flowdock.com/. It does also other useful things (gathers all feeds into one "inbox"). Works very well for development teams, but our whole team has been happy with it. Should work well for bigger organizations too.
Btw, it has also IRC-integration, so people familiar with that (like me) should be alright.
I haven't Jailbroke my iPhone for a few years. I did out of curiosity, but updating OS was just too much pain.
Been thinking what are the real benefits of doing that? Why? Is it customizing UI, adding more effects? Or is it just downloading apps outside app store? I think it brought value when we didn't have notification center etc, but still people doing it?