Google Fiber is back on the expansion drive, after several years of limited activity and even more limited news of its commercial progress. Google Fiber had pulled back from some of its initial markets, and appeared to have halted build-out in new markets, a few years ago, leading to the assumption that the company had been testing the water and trying to kick established operators into action, rather than trying to become a fixed-line operator. But according to a blog post from Google Fiber’s CEO Dinni Jain, formerly COO of Time Warner Cable, the service is now looking to expand in five states over the next few years – Arizona, Colorado, Nebraska, Nevada and Idaho. This marks a…