Blog administration: disabled the snap preview, Lorelle has a description of how to do it here.
I find the snap previews distracting and agree with her on the reasons why people don’t like it:
1. It pops up a thumbnail without warning as their mouse moves over the link, even accidentally, startling the reader and covering up content they are trying to read.
2. It doesn’t meet with accessibility standards and makes reading content hard for those with visual impairment.
3. The only way for the reader to turn it off is through an “opt-out” program, forcing the reader to visit the Snap Preview site to turn it off. The site turns it off for that IP address. Switch IP addresses by moving to another computer, Internet service, or otherwise, and it’s back.