Good but needs a couple off filters to be perfect Rated 4 out of 5 stars

When using the "enter" interaction do not insert the suffix/prefix if there are blank spaces or domains extensions:

Currently (pressing enter)
"helloworld" => "www.helloworld.com"
"hello world" => "www.hello world.com"
"helloworld.com" => "www.helloworld.com.com"
"helloworld.ca" => "www.helloworld.ca.com"
Suggestion:
"helloworld" => "www.helloworld.com"
"hello world" => "hello world"
"helloworld.com" => "helloworld.com"
"helloworld.ca" => "helloworld.ca"

The suffixes (.ca .mx .co etc.) could be added by the user in a single format: "ca,co.uk,mx"

I hate to use ctr, alt

This review is for a previous version of the add-on (0.7.1).