Nice script! Much better than my old one ;)

ravi: there are instructions at the top of the script's source, basically you search for test with your custom engine, then you put your custom search url where it says REPLACE-THIS and remove the q=test from the url.

Really sorry, I'm just an idiot and forgot to add the REPLACE-THIS text that the directions speak of. That should be fixed. Also, I fixed problems with the script not showing when you 'Search All' and if you didn't replace the 'REPLACE-THIS' text it should tell you next to you try to search with it.

I'm sorry it had this problem for so long...

Thanks counter. Ubbu, I'm a little late responding, but the 'Add Bookmark' link will appear at the bottom of each reader entry.

Much nicer, thanks

mandrill: Go to your profile folder, http://kb.mozillazine.org/Profile_folder and open the gm_scripts folder. Delete this scripts file and try installing it again. The filename should have googlereadercustomsearch in it. If you are still having problems, you might want to ask in the forms since it seems like more of a greasemonkey specific problem than a problem specific to this script.

Jackson, the script should be fixed now. Sorry I didn't notice Google changed things up sooner.

sharmard: Its now updated to work with the new AMO

If its something you removed using the red x, you can modify the preference this script saves. I'm sorry I didn't make an easier way to do it. They are in a preference with the name greasemonkey.scriptvals.http://addons.mozilla.org/userscript/Addons Crap Remover.bad_titles
The value should be a line separated list(as a string its \n, but it might appear as a dot in the about:config window) Just remove the title of the extension from the value to show it again.

I made another script to search like this does, but with the custom search engine idea mentioned in that post.

http://userscripts.org/scripts/show/6912

It should be persistent. It saves the extensions removed with the red x in a preference and reads from those and adds it to the bad_titles array when it is loaded.
It saves to greasemonkey.scriptvals.http://addons.mozilla.org/userscript/Addons Crap Remover.bad_titles

It works for me, but if it doesn't for you, you can always add it manually.

Updated:
-Highlights removed extensions when toggled to Show the hidden extenions(Clicking the red text at the top toggles it)
-Adds a red x to remove an extension
-Adds a has: operator to the BAD_TITLES array in the code, for example, has:Toolbar would remove any extension with Toolbar in the title

If you tell me things I missed I can update the script to include those extensions.

Nice job! Does a good job of highlighting my comments. Puts a nice green border around them.

They are there. I added some pictures to help show everyone how this works.