Are there any online resources about the pitfalls when you rent own homes?

There are many sites on the internet that describe the pitfalls when renting your own homes : realestate of msn.com, thepropertylandlord (UK), lawsociety.org (UK) and probably a lot more. Maybe you should also consider to work with an agent. He should know most of the pitfalls. But, than again your question might change into : "What are the pitfalls when working with agents?"