Hmm I might have done I cant remember. It might have been Jez or Alien talking about it also.
Theres a link to a post I made about Jacks on the front page of the forum actually but its pretty basic stuff really im sure you know already, not sure it would tell you anything at all you wouldnt know already and its pretty generalised. Here it is anyway
http://www.thedailypunt.com/poker/articles/JJ.html
In the blinds I just dont see the point in raising just like when in early (unless you have a a bigger pair then its a must). Youre just going to get called once, twice, three times etc and an overcard A, K, Q will fall 2/3 of the time and what do you do? Make a continuation bet even though you are so likely to be behind? Check and just fold to a bet as youll be OOP on other streets with an underpair? Cant really be a great winning play in my eyes.
Youre just giving yourself tough decisions with marginal hands (and JJ is marginal post flop if you dont improve if you face any tough action youre usually beat). I dont think you will win hardly any big pots with JJ WITHOUT flopping a set so why not put as little money as possible in with it until you flop that set.