You have more online friends than you do IRL
Running a blog means that you have to be in touch with your team at all times, from touching base about where a feature is at, to bouncing ideas off of one another. This probably means that you talk to them every single day, and because you're hooked to your email, you probably talk to them most of the day, more so than you do with your IRL friends. Hell, you might even like your online friends more than you do your IRL ones. You might even start to think, "Hey, do I even need real friends? What is 'real' anyway?"