The Mormons use similar methods, using "love and kindness" to achieve their conversions. This is image centered evangelism. Good things should be done for good thing's sake, and not as a sales pitch. This is merely superficial, since many athiests do the same thing as well, performing good works like feeding the sick. The real question is: What is and isn't true. If you forsake truth for mere appearance, then you have nothing.
Oh, I guess that’s why the Mormons have better conversion rates than you do. Yeah, using insults and ugly language always works. You could also try beheadings - that is a nifty tool for conversion.