"Will edublogs and learnerblogs be back on line ever?"
youre not reading -- NO-ONE here has that answer, since no-one here is related to that site. The message that is being displayed is the STANDARD message ALL wp-multiuser OR regular wordpress users see when their blog is down. It is, in fact, derelect of whoever is managing that site to leave that message as they did -- it should have been edited to reflect that this is NOT where people need to go with issues.
"Did I make a big mistake trying to incorporate technology into my classroom?"
Is this a rhetorical question, or do you REALLY want to discuss this?