Hi Rupert,
There is some strange stuff going on with the site I experiment but no real recovery.

Most of the sites do really well in Bing/Yahoo and it seems stupid to let the bird in your hand and go chase another one.

Tomorrow I'll make another batch of changes to more sites.

Hi hungrygoose,
What methods are currently working for you (feel free to go deeper)?

I'm not looking for a network but some individual publishers or an agency that have already build a list with publishers (not connected in any way) willing to publish a guest post or a featured article.

This is standard media outreach, nothing to hide.

If some provider/agency has to remain private, there is always a PM 

Hi,
I'm looking to get out some content with links (in the UK financial vertical) via sponsored guest posts, featured articles and etc.

Can you recommend some providers (site/blog owners) or agencies (with connections/lists to sites we can publish on) that can help in that matter?

A few months passed from Penguin. We should have some tests and results.

Since our sites that were hit were money sites we were very careful in testing. We lowered the on-page optimization, build some new "brand" anchor links and removed a few sidewide links.

The Googlers seem to be fairly confident that they didn't open widely the doors to "outside your control factors" hurting your site. One way of doing that is by combining/confirming outside data with data that is under your control (like on-page optimization and internal link structure).

Have someone been able to recover from Penguin?

They are providing the keywords to the paid advertisers (PPC) but not to the organic traffic. It's unfair but we get used to that.