There is an investment plan in NoExpiry now. Here is the news:
NoExpiry now starts a investment program for all members to earn more without fear of losing your money.

Currently we have 2 package:

-2.5% per week for 4 weeks.(interest will be sent to your account on a weekly basis and principal return in last payment) 10% profit

Or

-4% per week for 12 weeks (interest will be sent to your account on a weekly basis and principal return in last payment) 48% profit

Minimum investment is $10 and maximum investment is $1000.
Payment processor is paypal and Liberty reserve.
Interested members, sent me a PM.
Reference: http://noexpiry.com/showthread.php?tid=2067

The return is very little, so I think it is safer to invest there. And one thing which can be an appeal is to make spend with PayPal, which cannot be done in HYIP/autosurf sites. I just hope that the return can be increased a bit.