Over the past couple of months I've build up around 20,000 backlinks from social, web 2, profiles and blog posts. I've also a couple of link wheels using web 2 sites. I've moved upto position 17 for my KW, so things are looking good. I've read a few people on BHW talking about keeping your links wheels and back links active, and I'm not quite sure what this means. When I've created web 2 properties/link wheels I have maintained a log of all login IDs / passwords..... but should I actually be changing my articles.....or just continue to blast backlinks to the web 2 sites? Any help would be appreciated as I don't want me backlinks to become worthless over time.