Jon Coles

About me

Developer Information
Name Jon Coles
User since March 31, 2008
Number of add-ons developed 0 add-ons
Average rating of developer's add-ons Not yet rated

My Reviews

Bulk Media Downloader

Offers too many items, which may not include the video you want Rated 1 out of 5 stars

Delivers a long list of items with no way to know which is the correct one. Even when restricted to just videos, the list grows and grows. Ridiculous. I just want the one video on this page which I am now watching. What is all that other stuff?
Seldom have I successfully retrieved the item that I wanted.

This review is for a previous version of the add-on (0.1.9). 

PDFescape Extension

Doesn't open local files. Editing poor. Rated 1 out of 5 stars

The claim that PDFescape can "open and edit PDF files & forms online" means strictly online. If you open a local PDF file with Firefox, PDFescape is not activated. Only if you click a link to a PDF online, do you have the option "Open/Edit in PDFescape". When I tried a PDF link hosted on my own local web server, this option was greyed-out. So, it seems that documents on your own machine are strictly off-limits.

In the editor, modifying existing text doesn't really work. At best, you can overprint your own text on the PDF page, which might be OK to fill in an online form. The Annotation feature works well enough.

Oh well. The price is right.


Name changed, no results Rated 1 out of 5 stars

The add-on is now called TrackerWatcher. Clicking the toolbar icon opens an entirely empty page at Using the page directly, it becomes apparent that the database is very small. Almost all inquiries get the response "Sorry, this domain was not found in our system." The only hit I got was for Google.


How can I tell if it's working? Rated 1 out of 5 stars

I've installed the add-on, but how do I know if it's doing anything? There should be a way to see what is being blocked. The rather sparse PrivacyWatch website promotes TrackerScan as a way to see the trackers. A link installs an add-on called TrackerWatcher (same thing?) The TrackerWatcher toolbar button opens a completely empty page.

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


Great idea, but needs documentation, list service Rated 4 out of 5 stars

As with so many other add-ons, users may not get the full benefit of the program because of sparse documentation. Users cannot always find and figure out all of your features through experimentation.

And don't confuse people with jargon. For example, the description includes this confusing statement: "Hit the status-element and see what has or hasn't been blocked." What (and where) is a "status-element"?

I couldn't find the "floating, translucent tab" on each ad as mentioned in the FAQ. A picture of one might help me.

The right-click menu item "Adblock Background" confused me, until I tried another ad where the item was "Adblock image". Why not "Adblock this!" for all cases?

As shipped, the filter list is empty. This program needs to work more like an AV or Antispam application with a downloadable, regularly-updated list of offenders. It would take a long time for a user to accumulate a useful block list by himself, wouldn't it?

The idea is great though, and I am already working on my block list.

Arfcom Ad Blocker

Rated 1 out of 5 stars

Some instructions would be nice.
I assume you configure this thing by going to Tools > Add-ons and clicking the Preferences button in the listing for Arfcom Ad Blocker.
Unfortunately, the Preferences button is grayed-out. I'm running Firefox on Ubuntu 7.10.