I've recently read your thread entitled An Open Letter to DiS ( http://drownedinsound.com/articles/3292941 ) and I feel you pain.
However, I would like to point out a few things:
1) The current ad bug(s) are being looked into and are a browser issue, rather than something intentionally intrusive. We're as miffed by it as you are, especially as we know that if jerks your chain.
2) The site is currently in transition and another facelift is coming. The movement of the log-in box is, as said previously, only temporary. We're also working on improving the community features and from Monday we will, finally, after several false starts, have a full-time tech person (a luxury we've not had since Matt left for Playlouder 18months ago and have only had people on short-term contracts helping out). Things should be running much smoother and to your and my liking within the next few weeks.
3) We really value your feedback and we don't intentionally do these things to piss ya'all off, promise.
4) Some of you may quite like this new site I'm behind, have a look, especially at the Death Cab piece http://www.theQuietus.com would appreciate your feedback.
Thank you for your patience,
Founder of Drowned in Sound, aged 26 and a half.