Heck, I've received an e-mail from a very high impact journal saying that I've been recommended be a colleague (obviously someone who doesn't like me) as a suitable reviewer for an article. In my youthful enthusiasm, I've said that I will do it (it's by some very noteworthy authors closely related to my field), and I'm just wondering if anyone else here has ever peer reviewed an article? What was it like? Is it potentially difficult and time consuming? I'm going to try and be balanced in any feedback I give, but I'm just a bit worried that I may not have much to say :$