when i answer?

You can leave the answer there without losing any points. Most people will understand that it's similar to other answers because they were all written at the same time. One of the best ways to not run into this problem so often, though, is by finding questions that weren't just asked. You can select a category of interest or use the Advanced Search for open questions and find many questions that would otherwise go unanswered without your help.

I think all these answers are useful... Unless you meant to be silly, everybody is looking for others with similar problems and ideas. You don't have to be the first one to be helpful.

Good Luck,

Robbo

It annoys me too!! But you can always edit your answer, so it doesn't look so silly.

Don't delete it, just leave it. It happens to everyone, don't worry :)