This app makes bubbles with addresses in them all over the page, no way to remove them or exit from them except to disable the software. Anyplace it thinks it detects a location. You can no longer read the actual page info, which often is not location info but could be, for example, url links - now that they are covered by a big Google Map bubble, you cannot click on the url, or continue reading the other text that also happens to fall behind the bubble. (Oh yes, please obscure data text I need, give me no way to x out or see my data again, and impose stupid map link bubbles on me that I do not want. NOT!)
It is called Google Maps for Chrome - I believe the strategy is to make Firefox users frustrated so they will think it must work properly in Chrome and switch to Google Chrome. No other possible logic to this add-on..