http://ethinvites.com is shit don't bother sorry for posting
you can also try faucets, they give you free crypto for being exposed to their advertising
http://moonliteco.in/?ref=bbaa905f4c40 for free litecoin
http://moonbit.co.in/?ref=ec26b62a7342 for free bitcoin
http://moondoge.co.in/?ref=2d45566546b8 for free doge coin

the faucets are not going to make you rich but are a risk free way to get some crypto.
good luck.