You may already be aware that link popularity is probably the most important factor to getting a number one rankings on the search engines. However there is something that most people forget when trying to do link exchange:
It's not just the quantity, but the quality of the links that is important!
Basically, "link farms" (or "free-for-all pages"), created only for the purpose of automatic link exchange, and where there are thousands of unrelated links, do not work any more. If you do link exchange with a link farm, your site can be severely penalized, especially with Google.
So, you need to find good quality sites, how do you do it? Well, there are two different ways.
1. Search for link partners in specialized directories that focus on link exchange. The Link Exchange Directory is one example. Other link exchange directories can be found here.
2. Purchase one-way links from a directory that organizes sales of links, such as LinkMarket.
3. Good quality sites are going to have high search engine rankings. So, what you can do is simply to search for the top 100 ranking sites on Google, or other search engines, for the keyword that you are interested in. For example, if your site sells wine, then you search for "buy wine" and "wine" or "wines" and find the top 100 sites for each of these keywords.
..............
4d cinema | 4d cinema
4d theater | 4d theater