One of my biggest pet peaves with Visual Studio .net, since VS.net 1.0, is that it inserts Id's into html elements when you paste chunks into the source editor.  First, I am capable of assigning Id's myself.  Second, Table17 is worse then having no id at all.  Third, when I copy and paste from one div to another, Don't replace my Id with DropDownList1 just because my action implies that I may just duplicate id's on a page.  Usually, I will delete it in a moment.  I have learned to cut and paste to get around this issue but every now and then it bites me hard.

Well, VS.net 2005 has a check box you can uncheck so this will stop.  see illustration...