i know everyone's all in twist over this, but i don't think the alternatives are all that bleak, really. idk anything about pinboard, but i ported everything over to diigo when the sale was first announced, mostly because diigo has a setting that lets you save a copy of everything you bookmark to your delicious account, and i was pretty much still hedging my bets then. anyway, once i got used to the fact that diigo is really not the same service as delicious, and wasn't really designed for the same purposes as delicious, it actually does do everything i want it to do. which is to say, i've really been v happy with it! i haven't even looked at my delicious account in many many months.