One problem for me, apart from sucking at word games...

I started with a load of vowels in my hand, just two consonants. I found a 3 letter word OK, but got a consonant and vowel back. I traded two vowels and got two more back. Couldn't make a 4 letter word, game over. I suppose the difference in scrabble is that if I had passed, someone else may have put a consonant down that I could use...