I want to know that the source code on my phone has been peer reviewed. However, this does not always mean backdoors are caught. For example, the NSA injected a potential back door into openSSL. It was caught, but only a small number of people are smart enough to catch something like this. STILL: it was open source. I like that. I would buy a linux phone even if it sucked a little, knowing that I could view the source code.