Questions about Voki, Webiste,

This class certainly has increase my ability to use the multiple sites we discussed directly in my classes. I do have several unresolved questions that someone else may have had more success resolving:
1) How do you embed the Voki into a Website or a wiki without having all the HTML information appear, and then not work?
2) Several on my students had trouble with recording sound in their Voicethread, and, in turn, I also had a problem during my attempts in class along with several of my colleagues. Any ideas?
3) My website is in place with photsos of our recent Costa Rica trip, but I am unable to put script in without the underline button activating. There has to be a simple solution to this.
4) I am wondering if there would be an advantage of using Wikispaces instead of Pbwiki for my classes next year. Has any one discovered pros/cons?
Thanks for any input.