Last year, I spent time each week entering the spelling words from our district-adopted spelling program into the SpellingCity database. I also took the time to enter challenging words for students needing differentiation. So this year I am reaping the benefits! Fortunately, SpellingCity has pre-programmed sentences and definitions for 95% of the words that I used, so I didn't have to do too much work each week anyway!
My students (this year and last) have expressed appreciation for using games in the classroom instead of the typical worksheets for spelling practice. Although its novelty wanes after a few weeks/months, students still enjoy the format as compared to more traditional methods. I also use SpellingCity when introducing vocabulary for special events or new units. The website helps students understand words that would otherwise be difficult to understand. I highly recommend the website to others. Please comment if you use it or if you have any questions about our use!