I'm using Chrome right now and it is fine, a cleaned up Firefox, but nothing mindblowing. What do I sign up for in terms of privacy? I didn't read through the

I'm using Chrome right now and it is fine, a cleaned up Firefox, but nothing mindblowing. What do I sign up for in terms of privacy? I didn't read through the whole deal(who does?) but saw some stuff about ads, does Google track my surfing? I'm missing the top right Firefox searchbar where I can search wikipedia and other sites though.