 
Using “niches” feature will enable you to target your traffic, which should increase the productivity of surfers you send to your trade partners (external productivity) and consequently also your (internal) productivity.
By default, when the skim selects a surfer to be sent to a trade instead of a gallery, all trades from the outgoing list are loaded. But this surfer might be searching for specific content and if you send him to a trade with different content, he will probably not produce many clicks. If some of your trades provide specific content you can assign them to niches and send surfers to those trades that match their interests.
A niche is a mini version of the outgoing list, containing only the trades assigned to this niche. Trades assigned to a niche can only get traffic from links containing a niche parameter ''g='', unassigned trades can get traffic from any link.
This is how traffic trade scripts usually distribute traffic: every time a click on a link containing a niche parameter g=niche1 is skimmed, the surfer gets sent to one of the trades assigned to niche1. In other words, “outgoing list” gets ignored and the respective surfer is sent to a trade based on the “mini ougoing list” for niche1. 
Naturally, you primary goal is to increase your traffic but distributing surfers to niche-trades exclusively could prove counterproductive in certain situations - consider your unassigned trades:
We have integrated two different options of what TE3 should do when the click on a link containing a niche parameter g= is skimmed:
TE3 will calculate a “mini outgoing list” based on the parameter you choose:
g=, he will be sent to the most owed unvisited trade in this niche.    g=, he will be sent to the most owed unvisited trade on the “mini outgoing list”.
We believe that balanced and proportional traffic distribution is your best choice in the long run, and have designated This niche + unassigned as default setting. However, a lot of webmasters support a different trading philosophy - concentrate on perspective trades and targeted traffic. Both doctrines work and you should choose, which one suits your needs best.  
Each time a surfer clicks a link on your website, this information is stored inside a cookie. When he produces a skimmed click on a link containing a niche parameter g=, he will be sent to a trade based on the “mini outgouing list”. And this trade will be removed from the list (based on the cookie information). When he produces another skimmed click on a link containing parameter g=, he will be sent to the next trade from the respective “mini outgouing list”. If your niche is assinged only a few trades, there is a chance a surfer could visit all of them, if he produces a lot of clicks. You can specify, where you wish to send him next:  
g=, will send him to the most owed trade on the list.  
To create a niche, switch to “Niches” menu, click on the  
 Manage niches button and open “Manage niches” pop-up window.
 
 Add row
 Add row  
 Click  
 Add row to create a new niche. 
 Delete record
 Delete record 
 Click  to delete selected record.
 to delete selected record. 
 Trades
 Trades  
 The number of trades assigned to a niche.  
 Successive number
 Successive number 
 Successive number of the niche. 
 Niche name
 Niche name  
 Enter a niche name of your choice. Only use alphanumeric characters and -, _. Note, that niche names are case sensitive - g= parameter has to match Niche name exactly!  
 Include trades from
 Include trades from  
 Available options: This niche and This niche + unassigned active trades. 
 After all trades visited
 After all trades visited  
 Available options:  Reset and start over, Send to other trades and Send to gallery.  
 Save
 Save  
 Click  to confirm your settings.
 to confirm your settings. 
Once you have created a niche, you can assign trades to it. Close “Manage niches” pop-up window and inspect a list of your active and inactive trades in TE3 “Niches” menu:
 
  Domain
 Domain  
 Trades' domain name.
 Niches
 Niches  
 Each niche has one column. 
 Mass checbox
 Mass checbox 
Assign all your active and inactive trades to a niche.
 Active trades
 Active trades 
List of your active trades (sorted alphabetically). 
 Active trades mass checbox
 Active trades mass checbox  
 Assign all your active trades to a niche. 
 Inactive trades
 Inactive trades  
 List of your inactive trades (sorted alphabetically). 
 Inactive trades mass checkbox
 Inactive trades mass checkbox  
 Assign all your inactive trades to a niche.  
Note, that you can assign each trade to one or more niches, or you can leave it unassigned.