I have purchased a few backlinking services in my time (even one a few weeks ago) - and even after Penguin and Panda I noticed the same thing happening when I check the Web 2.0 and Article links built by providers... the spinning is not deep at all. I got sent a report recently from a well respected trader here and I noticed all articles were just spun on SENTENCE LEVEL. This guy is great and has worked on many of my websites with consistent success in ranking higher. This leads me to the conclusion that maybe I write my own article and spin each sentence 5 times I could do this myself... I have UD and spun one article a while back which took me 8+ hours (3 x sentence rewrites and words level spun). I hated this! But if I can get away with simply rewriting each sentence 5 times I may give it another shot... Any thoughts?