Fellow Hellenists! Stop using Perseus Tuft’s LSJ and the one at TLJ right now! Helma Dik (one of my professors) has produced something much cooler. The interface has much of what I like about the Perseus TLG, but it’s much prettier, will give you LSJ, Middell Liddell, and Autenrieth all on the same page, and it gives frequency-statistics and corpus-examples for particularly important words. (And, just to bate you, will tell you if you’re looking up a word that’s in the vocabularies of an introductory textbook.) The TLG version still has its uses — it’s based on a more up-to-date edition (i.e., one no longer in the public domain) and it’s easier to look up TLG citations in it because it numbers the entries. But Helma is many times more awesome than the TLG people, and you should take advantage of her work.
She gave a presentation on this at the beginning of prose survey a few weeks ago, but I missed most of it because I was running in late from Sanskrit; it took me this long to find it myself. Don’t follow me into error.