I also dont like the cloud logo only becuase it would make me ignore your blog if I saw it. Ie a negative connotation. In fact I think no logo is better a better starting point for a blog.

I dont even know what the techcrunch logo is.

In your situation I would start with "StartupDream" written in a legible but non-boring font and start working on content. People read a blog because of its content. So focus on content content content.