More of the same
So apps are mining Facebook... if you didn't figure out this was happening, then you really have no business using a computer. If you input anything which is then stored in the cloud, you better understand, somebody somewhere is going to leak, mine or hack your information.
When it comes to the majority of data points... these are already being gathered in by credit agencies, credit card companies, mortgage companies and data services such as INFOGROUP.
They trade this information and sell it out. Make/model cars you've purchased, where you purchase/shop, what brand/model of washer/dryer you purchase, if you voted, mail ads you respond to, type of deodorant you use, etc. You use a credit card, look how detailed the information on your receipt is. Credit card and retail outlets just sell out everything you do.
Even local governments sell out information, such as whether or not you showed up to vote and what dates you voted... i.e. do you show up to vote for more than just national elections? How often has the cops been called to your house? What upgrades you've done to your property, etc.
Until we can vote in people who will not sell out to the corporate data miners and sellers, and will clamp down on the amount of data which can be collected, stored and sold... this will remain a problem everyone should be aware of.