Do we need to mark all CSS related articles as such in the title or link domain? No. For bitcoin, I do not use them, but the social and legal implications of a money or a way to transfer money between two parties without the ability for a centralized organisation to control this transfer are enormous. Just because of this, I like to read about bitcoins on a regular basis.
At the moment, I guess, we have maybe 1 or 2 articles a week making the front-page, fairly acceptable.
Wallet encryption only goes so far.
For a start it's probably in main memory when the program is running, secondly you need to put the key in every time you start the bitcoind, how many lazy admins put the key in the startup script?
It's quite simple enough for an intruder to install a keylogger to obtain your wallet.dat password. Further, the intruder could easily modify your send-addresses and have you send Bitcoins to him unknowingly. Some sort of secured 2-factor authentication definitely needs to be implemented moving forward.