Generally, things that are half-assed aren't done as well as they could. This can be meant casually or negatively. Usually, it's a project of some sort that someone slacked on, producing a half-assed result. This can be achieved purposefully (because people don't care) or unknowingly through the collective stupidity of those involved.
ie - Knol Dictionary (no offence meant here) is half-assed because the majority of entries are bullshit, there are far too few entries and a large collection of definitions are either inaccurate or completely ridiculous. (for what it's worth, I think a stricter "post review" system should be implemented to filter out garbage that's making it way on here)
ie - A teacher might tell a student - "The half-assed assignment you handed in didn't even cover the proper material. It shows no effort or creativity."
knol is an collerative dictionary. here is knol dictionary where every word, sentence or situation may have definition. wellcome to knol dictionary!
you can find sitemap in this page.