Perceptive forum discussions on Oral sex enhancers:

When he cums in your mouth
Girls, what do you do with his cum when he finishes in your mouth?

Deep throat = only good head?
My boyfriend doesn't really like receiving head, only because I gag a little bit when I can't go as deep as he likes. Do you think going deep is...

How big is too big?
Have you ever come across a cock that's too big to fit in your mouth? And what did you do with it?

Your partner...
I love to give my man oral. It's like a game. I love finding new things he likes and trying different things. Who else loves pleasing their partner?..

Do You Prefer Your Partner To Deep Throat You Or Not?
I know most guys love a girl that can deep throat them, but how many of you prefer something else?

Short answer: yes link

solitudinarian's link says it all. It's not what you asked, but I'd like to add that fellatio also has health risks.

YES!

Yes you can.

YES

Yes, you have to be careful with any direct sexual contact.

yes.

Yes, you can get std's from oral