Is it safe? Are there any stability or file corruption concerns? I got a little nervous when I used it to delete the Winterboard Font Pack (maybe that isn't the best example, because its installation seems to install two Cydia apps). The icon went away as expected, but the fonts remained in my Winterboard list until I went into Cydia and deleted the Font Starter Pack (not sure if that was the name) that I assume got installed at the same time (I know I didn't install it myself).