The other day I was using braid for the first time, Power Pro 30lb. And I love how it casts and everything but after about 10 casts I threw my lure off my line. I was using the knot that you like twist over 7-8 times (sorry I don't know names of knots yet) and was wondering if I should use a different knot.

because braid doesnt stretch it doesnt cinch as well.  i had a lot of problem with braid slipping at first, then i started tying a double palomar knot and hitting the end of the tag w/ a lighter and have never slipped again.  be sure to wet the line when you tighten it down.

this guy goes through a couple more times than is necessary in my opinion.

Palomar and Uni knot will be your two best knots with braid.

For tying on a lure to braid line, I use the Palomar or the Trilene knot.  Never had a knot break with braid.

PALOMAR  

16-20 fast easy and always holds

http://img.photobucket.com/albums/v13/JigMan/DSC02208.jpg

Here are some serious knot tests by folks that catch serious size fish.

http://www.sportfishingmag.com/article.jsp?ID=43572

I saw Dean Rojas (i.e. bass pro) at a fishing show in Raleigh NC.  He uses a double palomar knot with braid, so that's what I plan to use from now on.  He showed everyone how to tie it properly.  Very nice guy!