One of the products I download and start to use is Action Outline. It's a 2-pane outliner (meaning that the outline is on the left and the notes associated with each outline item are on the right. It's got quick & easy commands for inserting, deleting, moving items and very quickly I start to think: "Maybe this is the one?".
And then it happens. I add an outline item and get the message:
They have a 30-day evaluation period, but that's not enough for them -- they cripple the product so that you can't really test it. This is similar to other products which don't allow you to print more than a few items or more than one page in evaluation mode, for example.
I have a policy designed to avoid wasting my time/money: if a product is crippleware, I don't test it or use it... it immediately goes into the trashbin. Maybe the developers are afraid that real testing might lead to problems, so all they want to do is whet my appetite and get me to buy the thing on blind faith? NOT.
Note to Product Developers: if you want me to evaluate your product, then make the whole thing available so that I can actually evaluate it.