The lack of privacy on the internet is a concern to the speaker. (Main idea)

The 'digital woods' means the internet. (Main idea)

The speaker feels sharing data is unwise. (Main idea)

The speaker feels annoyed when he does not know when his internet use is being tracked. (Main idea)

According to the speaker, a profile of people's internet use is being made on everyone who uses the net. (Main idea)

The speaker feels that the people who are tracking internet users will be free to do anything with the information. (Main idea)

Collusion is the name of the software that tracks other internet users. (Main idea)

The speaker is frightened because his internet use is being tracked by criminals. (Main idea)

The speaker freaked out when he found that his daughter was being tracked too. (Main idea)

The speaker advocates installing Collusion so that we may sit idly by when using the internet. (Main idea)