Points to be noted while posting your backlinks in forums

As most of the forums have administrator approvals for the messages your are sending so, while sending any information do not make the administrator feel that your purpose is the  backlink. As forums are generally used for questioning and answering, do the same, see that the message you are sending is related to the discussion going on and then at the bottom give your reference as your backlink.

Trick : To get a list of forums related to your keyword that you are targeting, make a search in google with the that keyword then filter the results by selecting 'discussions' from the left side of the search results, this will give you the list of forums of your strong competitors.

In most of the forum sites while registering try entering your backlink even in your name or in any section of the profile if at all it has. As most of the forums automatically add your name at the bottom of the message, so with your website as name you tend to get backlinks automatically.

There is no estimated time for the appearence of backlinks through forums, it all depends on when the admin is checking the messages for approving them. Enter only 1 backlink per message.