I am also a bioinformatician. How much control would you have over node resources? What happens if a browser goes from idle to active? Also, calling this sequencing isn't accurate - this is alignment as daemonk pointed out.
I am a bioinformatician and I regularly align sequences against large databases. I wonder how much faster/cheaper will this be compared to renting out an ec2 instance for a couple of hours and crunching through data.