Like most sites today we have a whole raft of social links in our footer, these are on every page of the site and link out to Facebook, Twitter, YouTube, etc Should these links be nofollow to avoid juice leaving our site or would you recommend allowing them to be followed to increase the power of these social sites? Is there a definitive Yay or Na on these social links?

Hi Everyone, I am looking for some help, I have just taken over a campaign for a client and we are seeing huge changes in conversion rates overnight. The client is selling a health product and is consistently getting around 1-2k visitors per day. We are getting about 6% of the traffic to the buy page consistently. However, we have found that one day the order process may convert 1/20 of these visitors and another day it could be 1/80. We are only talking about 5-20 sales per day, but I am really confused why one day it can convert so well and another so poorly. The traffic being sent is the same and all other factors are the same (no split testing). There seems to be no logic, the day of the week does not seem to impact, it almost seems random. If anybody has any recommended places to look that would be very helpful as at the moment I am at a loss. Example: Sunday 15th Visitors: 1,279
Order Page: 240
Sales: 3
Declines: 3 Monday 16th Visitors: 1,407
Order Page: 323
Sales: 17
Declines: 5