I think that your questions are pretty common – when I set up my blog I wanted it to fit into what other people expected it to be, but in time I have come to realize it has to reflect me and my interests, and I’m just not that interested in Twitter, or some other really popular web services. I use the services I find attractive and useful, and in doing so I sometimes question whether I’m falling out of the loop, but most of the time I feel like I’m simply being more authentic.

Use what works for you – and unless you’re trying to make a living at this, don’t worry about having all of the details of content delivery figured out. You’re doing fine!