[pavpanchekha]

Social problems can get technical solutions. That distinction in bullshit and should be educated out of the Hacker populace. Password reuse (which, BTW, is not why we hash passwords) can be solved otherwise; for example, you can hash passwords client-side and then again server-side, both times salting with a unique salt. That way, the password itself is uniquified in a non-reversible way by your salt (which is presumably not used elsewhere). Your client-side hash can be very expensive, since it's done on the client, and the password you recieve (the hash, that is), is guaranteed unique.