I have gotten decent value from the easy-to-use extension but finally had quite enough of the Reversa's nag tool bar (yes, the entire width of my working screen!), continuously nagging me to log in/register with every screen refresh, which in YouTube means every 3-5 minutes! Finally got sick & tired of the amount of real estate this squatter was rudely occupying on my screen -- add that to the time it stole from me through it's the interruptions (every time a new video came up or a new tab) requiring me to switch MY focus to tending to Reverso's intrusive demands. A productivity black hole - good riddance!