For anyone else who relies heavily on RSS feeds, and Google Reader to read them, this hint is a real help. Google recently updated reader with an awful new look, and made it incredibly slow. Well someone on the Google Forums has found a solution that returns the old speed.
In either Chrome or Firefox Adblock add a new rule and enter the following text:
||plusone.google.com/u/0/_/+1/fastbutton^
This should return the old speed, but getting rid of the +1 button on other sites (like it gone from 500px). Not an ideal solution, but anything to get my speed back!
And if you added a custom google plus feed to the Send To it still works.