I'd like to know as well. The truth is probably that digi-key saw some profit changes or personel changes that make an increase in traffic from a quality aggregator like octopart advantageous. It could also be a look at all the other places that are on octopart and see that they don't have the inventory that digi-key has; so they might not be the low cost leader on all the parts but they have 1k in stock. Maybe octopart hired a salesperson? I hope they chime in.