Instruct: Classify Amazon reviews into positive or negative sentiment
Query: VERY limited lifespan

I loved this when I first started using it and recommended it to everyone -- but after very limited use, it was totally shot. Either the keys didn't respond at all or if you pressed one key, multiple letters appeared ("a" became "as"; "q" became "qw") and it was impossible to return. One friend who also purchased it had exactly the same problem within a month, so it wasn't just a bad unit.If I coud give it NO stars, I would.