See Greasemonkey on which Im not focusing my efforts on.

Lessons learned

According to authors, most of those problems will be corrected in the upcoming version 1.0

Alternatives

  • Reframe It It's Your Web, Speak Up, Give It Context

Note

My notes on Tools gather what I know or want to know. Consequently they are not and will never be complete references. For this, official manuals and online communities provide much better answers.