dazz - 9:18 pm on Aug 15, 2007 (gmt 0)

Getting emails now and again with a site in a similar area to yours and asking if they can possibly link to their site and in exchange add your site on one of their pages = not excessive

Spamming emails everyday with 3 way link offers and having hundreds of links in a link directory to manipulate PR = excessive

Obviously google will never actually say where the "Excessive" line is......but jeez, use abit of common sense and if you think you perhaps might be anywhere near the "Excessive" mark...you probably are.