link exchange is very much usefull for increase the website backlink., from the links exchange we can get good pagerank website backlink. these links help for increase the website PR..
I personally suggest link exchange is not good rather you can do one way link building.. When you exchange link, your website pr is leaking to the other party website in the same way their website pr is leaking to your site
So, you would be happier if we say that link exchange is on page seo or off page seo? It is not important at all how you will call it, only matters that it is important as every other thing related to seo.
Because if you have a group of SEO that do the link exchange method, your website can have a good quality back links that comes to every different website.
Link exchange is one of the easiest way to improve your website link popularity. By doing this you can improve the placement of your site in search engines. But I don't think it is one the proper way to create backlinks. One way link building is te best way to get quality of backlinks. just you have to search some specific directories for your website with good pagerank. Try to do social bookmarking, forum posting, press release and article posting.
Exchanging links is a long established method of increasing web popularity among search engines. If you would like to increase your traffic, exchanging links is the most cost effective and responsive way to get visitors to your site. The vast majority of web site owners think that exchanging links is only helpful because it can boost their rankings in search engines such as Google. Search engines rank websites based on the amount of incoming links so exchanging links is a good way to increase the number of links to your site.
In my opinion, it is not most important to create back links just from related sources. I look at that more like "spread the word" think. So, spread word about your site (with back links) and your site will hit top position
Link exchange is off page task.Link exchange is very useful seo technique.For getting quality backlink,link exchange should be done with similar niche site.Also,before doing link exchange we need to check the quality of a site.
Try to do reciprocal link exchange. Link exchange is off page process. Try taking links from related sites and good quality sites. It will increase your site rank and also the human visitors.