Is Smithers (the simpsons) gay?

well, i guess i will be the one to tell you that mr burns uses that nose of his to good use on smithers... ;-)

I'm pretty sure he loves that creepy old guy. He states it in an episode based on Smither's life and father. Oh smithers.

yes many episodes have shown this from the one with burns semi naked as his computer screensaver to the episode where there is the gay parade and you clearly see smithers with his hand out saying im gay and im staying in the closet

the writers use small hints for the audience during various episodes

Yes, there's even one episode where Smithers takes special injections every ten minutes to become straight. The episode is called future-drama.

Writer David Silverman has confirmed that both Smithers and Karl are gay.

yes he is the series hints at it almost through the whole thin there was an episode back in 95' i cant remember which one but they showed that smithers was gay for mr.burns heck he even has a naked pic of him for a screensaver

He's in love with Mr. Burns. And in one episode he has a shot to make him straight.

Oh you know he is. He is so in love with Mr. Burns!

there are plenty of hints at it and the way he looks at mr burns is just way too kinky

Yes he is