Two things annoy me a lot when I'm browsing the Internet. First, I hate unclickable links, where I have to select the text link, open a new tab, paste the link, then press enter. I'd much rather deal with links that I can just click to open. The other issue is being forced to manually edit a URL in the address bar if I want to browse up one level on a site. Linkification and Uppity are two Firefox extensions that make my annoyances go away.