7 Reasons Not To Use The New Tweet Buttons

Tweets on Topsy

1. Nofollow

The Twitter retweet code places a link to Twitter on every page you include it, and they didn’t add a nofollow to the link. It is quite possible Google will decide to ignore all these links in the future, especially as it is effectively hidden and not a “vote” for a particular page. The destination of the link doesn’t show similar information to what is in the button.

Bonus Delivery For Opt-Ins

IM Remarkable Bonus

This is a slightly taboo subject because with many product launches there is a launch competition not only for sales, but also for pre-launch opt-ins.
If you are offering an incentive for people to just opt-in, there is a high possibility that that lead might be worth less than a lead that has viewed some launch material, and decided that they are interested in the product enough to hand over an email address.