He also doesn't request interest at all, but he does accept tips.
Off original topic, but it appears to have resolved itself...
Receiving money (tips) for offering a loan is called interest. He's still charging interest, but only to people who choose to pay it.
It's the same as those big box stores. They offer you a no interest loan, but
charge you $50 to apply for it. Interest is the cost of borrowing money - that $50 payment is interest no matter what they call it.
If you make a big enough fuss, you can get them to remove the $50 fee, same as he won't take your tip if you don't offer it.
There is a misunderstanding here.
Meaning of interest:
"
Money paid regularly at a particular rate for the use of money lent, or for delaying the repayment of a debt" ~ Google.
For a loan to be considered as repaid, you need to pay the interest but for no-interest loans, repaying the borrowed amount is enough. You don't want to pay a penny more than the amount you borrowed.
Interest is enforced but tips aren't.
The example you gave is charging interest but it is different from this.
![Smiley](https://bitcointalk.org/Smileys/default/smiley.gif)
Stiil looking
Any steam items?