Should I start a new blog?

I started this blog on Jan 31, 2006. By the end of this month, it will be exactly 6 months. I have an average of about 3-4 postings each day so right now this blog has about 670-680 postings. I am contemplating on stopping this blog by end July & start a new one cz I think this one is a little overloaded. Should I? Hmmm.. I wonder..