[Adirael]

It's better to build something for yourself or contribute in Open Source than working for free on a for-profit company.

I also don't think it's easy to get "hired" for no money in most companies, legal issues aside, training people is NOT free and you can't trust and give responsibilities to someone you're not paying. On Europe is common to do unpaid internships as part of your education, but the companies taking you in get money or tax rebates to do so.