One of the most popular posts here at DIYP is the Create Your Own Bokeh post - this is the one that teaches you how to make nice shapes in the blurred area of your image - AKA Bokeh.
It is a nice thing because, usually, those hotspots are just taking away from your subject attention, and if you apply this technique, those annoying hotspots can become part of your artistic say.
Creating your own bokeh shapes is easy and fun, however there are a few repeating questions that I frequently get by email and comments. This is why I was really happy to learn that manimal magic has done some great thinking and have solutions for all questions. Some of manimal magic's wisdom was found in the comments of the original post, and some was taken (along with the images for this article) from his (really awesome) Flickr stream. I am going to format this as a Q&A thing, cuz it really feels like he's answered all the hard questions.