My task was to create a Comments/Suggestions submission method on a SharePoint site. A great way to implement this is to use a list and capture the "New Item" form you get built in with the list. Just post a link to the form using Source in the url to redirect after submitting the form to whereever you want.
you have a -
place a link on the http://mysite homepage http://mysite/Lists/MyList/NewForm.aspx?Source=http://mysite
this link will show the user the form to submit a new item and then redirect them to the page they came from once they hit "OK".
using a list is a great option b/c you can create approval workflows attached to it to notify the correct parties.