Ok, Earlier i released my Gaiaonline Spammer bot, This is the tutorial to make the spammer in it, If you want to know how to add the web browser ask and I'll update the post. Thanks. +Rep?

What you'll need to set up the layout of the spammer.
-3 Buttons
-1 Text Box
-2 Labels
-1 Timer
-1 Rich Text box

Name the buttons,
Start
Stop
Set Speed
Name the labels,
Speed:
Message:


Now to start with coding,
The start button (1),
Code:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Timer1.Start()
End Sub
The stop button (2),
Code:
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
Timer1.Stop()
End Sub
The Set Speed button (3),
Code:
Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
Timer1.Interval = TextBox1.Text
End Sub
Ok, Now you have to code the Timer, Double click the Timer,
Code:
Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick
SendKeys.Send(RichTextBox1.Text)
SendKeys.Send("()")
End Sub