I don't have a definite alternative to Cloze deletions yet. I think that they are very effective in certain contexts (the example from the article of using overlapping Cloze deletions to memorize an alphabet generally seems like a great use.) However, I've found that they aren't helpful for me when trying to memorize, say, mathematical formulas. In particular, I feel that I start to "learn the deck", rather than actually learning the underlying material, and I never get a feel for the formula as a whole. So, I should really revise my comment about Cloze deletions to be "Cloze deletions are not the most effective way to learn many subjects, including those I am trying to learn."

The nice thing about Cloze deletions is they're quick to make and quick to review. I would suggest making a few sample Cloze cards and seeing how it works out for whatever subject you're studying. If they seem effective, great! Definitely use them in that case. If not, experiment with alternatives. Sorry I can't give a better answer than that.