Please ensure you know how to get the avatar before asking for a lend. You can find avatar solutions on the link I provided above, or alternatively Sunnyneo/Jellyneo.
Ensure you have at least 45 items in your inventory before you ask for a lend of one of the more pricey items. The horrible random events have struck my lendees in the past.
Please specify a maximum of three things you'd like to be lent per form. If you want to be lent more, please fill out a new form after your first lend. This is just for my own sanity, as it can get a bit hectic lending one person 10 things at once.
Chokato only: place the TCG card in your trades as soon as you receive it, and then refresh your inventory. You can get the avatar this way, and you won't risk the wrath of nasty random events!
Obviously, don't steal the items! Everyone who's scammed me in the past has been iced. You can pretty easily earn the value of most of these items very quickly using food club, stocks, etc. so it's really not worth it.