I've seen a big change in the search terms reported in WMT Search Queries. For months these have been phrases that certainly appear on my site but are not targeted. Over the last two days I've seen them replaced with more relevant and desirable phrases that bear some relation to the targets of the site. In particular my main two-word key-phrase is actually now recognised as being associated with my homepage again. Rank and traffic is still way down, but I take this as an indication that my de-optimisation work (completed in June) is taking hold and Google is slowly removing its "blind-eye" to my websites targeted keyphrases and I'm a step closer to re-connecting with a meaningful audience.