Rated 5 out of 5 stars

Great. Prevents me from repeatedly triggering my corporate firewall accidentally.

Only improvement I can think of would be to add a http:// to the start - purely cosmetic

This review is for a previous version of the add-on (0.3.0). 

reply to Agagooga

Thanks Agagooga - I take your point about the cosmetics of having http at the start - the reason I don't is that I try to preserve the same number of characters after I lengthen the url to avoid messing around the page layout too much.
There's actually lots of ways one could alter the url on lengthening - (and I've had other requests to do it differently) - so at some stage I may give a small configuration option to choose the style you prefer.
Thanks for taking the time to review - and I'm glad it helps with your corporate firewall. (music to my ears!)