Thanks everyone.
Well this is an example http://www.hotmarketable4you.com/SpecialReports/PRE30141.html
I had checked lots of these links maybe 2 weeks ago and then had (poor) content on them - but now all seem to be broken so i suspect was a link farm.
And Mike - was more irrelevant rather than "bad" content
Think I'll build links over next few weeks and then evaluate where we are then - hopefully rankings will start to improve