I'm looking for any resources or tips on selecting good icons for functions unique to a certain web application. I personally don't design icons myself, and think I could be successful using those already out there for purchase.
If anyone could give insight on a couple of things, that'd be great, too:
1) Should icons on a toolbar always be labeled, or will a user be able to learn them after using the application regularly?
2) Why does it seem there is a preference to have more icon detail on web appliction icons, rather than simple web 2.0 media icons? The trend seems to be using icons like in Adobe Acrobat Pro or Microsoft Word where they are pretty detailed 16x16 or 24x24 icons, rather than simple symbols.