The amount of scams and bad business plans is so great in bitcoinland you should not invest in anything.
Exactly! Stick your long term coins in the cold storage, your spending coins so they are in your reach and enroll into a signature campaign. You will not risk anything, you will help others around you and make a small change every week.
So no, don't invest! Keep you bitcoins safe!
for a lot people holding coins is very boring as they don't get a direct gain when they let their coins sit in their wallets. they want to put their coins to work but don't think about the risks. they mostly find out what they did wrong when it is already too late.