What type of links?

Inbound links serve three purposes:-
(1) they add linkpop and PageRank to the site, (2) they send traffic to the site, and (3) if the link text (the text that is clicked on) is good, then the page's rankings can be improved.

(1) for linkpop, either text or graphic links are fine, (2) for traffic, text links are known to be more effective than graphic links, and (3) to positively affect a page's rankings, text links are the best. So get text links and not graphic links.

(1) for linkpop, get links from anywhere, (2) for traffic, get links from related sites, and (3) to improve the page's rankings, get links from anywhere - the higher the PageRank of the linking page, the better and, whenever possible, make sure that the link text is one of your main searchterms.

Summary

Inbound links are important for websites that want to move up the rankings. Inbound links, with the right link text , are essential for achieving top rankings.

Most websites are not natural link magnets, and link acquisition can be time-consuming and frustrating. Many websites that are approached by email will say no, but some will say yes. For top rankings, it is essential to take the time and get many inbound links.