Writing a rant on the RSOF would be easier, and probably have more effect than a "boycott" as at least Jagex would be aware of what you think, as with a boycott, their not going to assume "Whoa, we have less players today, must mean the players are unhappy". At least with a clearly thought-out rant in the right place, the right people (Jagex) will see what you think, other than making the servers slightly less laggy with an un-noticed boycott.