It seems some people just have different expectations perhaps or simply different requirements...
I have used linksmanager for about 6 months, my links continue to grow with google and my site is no1 for approximately 99 different keyphrases with the engines.
I also missed a payment with them and my links still worked so until i see bad major drops in rankings then i will presume they are a viable solution to basically SAVING TIME! that is all it is about really, so long as it is not a linkfarm which this site obviously isnt..
I am still selective, I may be off topic to a degree but I will still not swap with badly spammed or sites using tricks, that part is still common sense..