I was expecting double-digit returns from Prosper, and am very disappointed with my low single-digit results.Prosper does issue an annual 1099 reporting earnings for my 401k, which I ignore for my tax filing.I would suspect that you could deposit personal funds into your 401k's Lending Club account and call it a contribution, but I would check with Mark Nolan to be sure.But it seems like to would be simpler and cleaner just to deposit the full $18K to your brokerage account and move funds into Lending Club from there.

All with double-digit returns and plenty of upside through forced appreciation. 

Couple hundred bucks a door cash flow, double digit ROI, and yes the prices appreciate and you build equity.Anyone who disagrees, is missing out.

I charge $600 a week for a 3 bedroom house that costs a 4 digit number to buy and a 3 digit number to furnish. 

The key word will be underpinning for you if you have to dig, it's a pain but you are going to live there, do it.  

Retirement plans are best suited for lending.On a positive note, it's not a difficult business to learn and earn double digit returns with very little risk, if you're careful.

Couple hundred dollars cash flow, and double digit ROI.

I buy mine from Multifamily NW (they have digital signing built in, and after the initial fee the annual subscription for unlimited use of the forms is under $50 for 5 or fewer units).You might also consider getting your lease from the local landlord association.

Some may recommend parking it in the stock market, which could get you higher yield. but also opens you to double digit loss.

Whose face will he be giving the single digit to when things don't go well?