stevenhold - 9:31 pm on Aug 31, 2006 (gmt 0)
As far as I know, there is currently no keyword limit. Well at least there wasn't when I added my keywords (near 50,000 keywords). I had a rep call me and tell me to send him the keywords through email. Unfortunately, they will not accept a large keyword list if it has any errors in it, such as keywords larger than the char limit, inappropriate keywords, or even repeat keywords. It's very frustrating and very time consuming especially if you don't have a keyword tool which will filter out a list of the unapproved keywords from you main keyword list.