We can all have opinions about where various markets are going and which technologies will be successful, but opinions that are backed up by real money have more credibility. That is why it was heartening, especially for those of us who have been watching the ups and downs of broadband over powerline (BPL) over the years, to see that Google, Goldman Sachs and Hearst - three presumably sophisticated investors - are investing $100 million in Current Communications, a small company that is a leader in BPL. Current is the company that is partnering with Cinergy to provide BPL in Cincinnati (the biggest BPL project now underway) and also partnered with Pepco in the pilot project in Potomac, Md. If successful, BPL will obviously be another broadband pipe and particularly beneficial for rural areas.