Toolbar does not influence how frequently stuff is crawled. It is too easy to spam, and the toolbar does not have equal distribution across various regions. Many people assume some things provide clean signals which are not so clean.
Matt Cutts hates on paid links. He said they have manual and algorithmic approaches to paid links. Compares effectiveness of paid links going forward to how reciprocal link spam has largely died off with Update Jager.
Q: Does the sandbox exist?
A: Matt said here comes the audience part? How many feel there is a sandbox? How many feel there is no such thing as a sandbox? SEOs normally split down the line. There are some things in the algorithm that may be perceived as a sandbox that doesn’t apply to all industries. He knows it works to keep some spam out.
Q: CSS positioning? How does it affect ranking.
A: Good question, I don’t know. If your doing an include, it probably wont matter either way. In his mind, positioning text at top or bottom, is over rated. But try it.