If your blog is about a certain topic, lets say like my blog about music, you should really be a musician. I have seen blogs without their own content. But me? I write my own things. I don't just copy an article on the net and then paste it in my posts. It's really not bad to research on other websites. As long as you put citations when directly copying it into your blog. I believe I have the right to say "I'm a real rocker who plays real rock music" and "I'm a real blogger who writes my own stuff". As a proof, here's our rendition of Sweet Child O' Mine by Guns & Roses during a band competition in our school... And guess what?? WE WON!!!
In this video, you can see me playing a white electric guitar. I did all the guitar solos and sang on the "where do we go now" part. We raised the pitch a half step higher making the first chord a D natural instead of a D flat.