The word wordfinders is playable in Words With Friends™, no blanks required. Because it is longer than 7 letters, you would have to play off an existing word or do it in several moves.
Words With Friends™ Letter Score: 20
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (30 words)
dowdier, downers, downier, dowries, drowned, drowsed, finders, fodders, friends, frowned, frowner, indorse, ironers, nodders, refinds, rewinds, rewords, rodders, rosined, rowdier, rowdies, snowier, soddier, sworded, weirdos, winders, wonders, wordier, worried, worries