I know people think this blogging thing is easy. Aspects of it are. But it takes a long time to not just build up traffic, but reputation. To not just have a readership, but hope to have a wider influence, you have to demonstrate that you're not nuts, that your judgment about what is and isn't important is pretty consistent, that your bullshit detector is pretty good...I'll have more to say on this subject soon. Keep your eyes open for a Paypal button or something similar.
Most bloggers have to work for a living, their blogs are just a side thing. Few are hoping to have blogging be a full time thing. But every second spent blogging is time away from spouse, away from kids, away from advancing career, etc. Sure, it's "just a hobby," but it's shame if people who have spent time building their sites and reputations, building their networks, eventually recognize that it's something they have to step away from.