But you do realize that people will quickly stop using your website when it's sucking 100% load out of their CPUs?
the applet of bitcoinplus doesn't suck 100% cpu usage.
they're all mining and bitcounplus shows only about 50mhashes per second
i've tried the applet miner on my sites too, same result. i think it's due to that the miner at bitcoinplus is a java applet and not javascript. java applet might require user authorization before it can be executed on some(old) browsers and/or is disabled in the browser settings by default. also, do you have a lot smartphone users? might not work on them either.
The applet miner is still far superior compared to a pure Javascript Miner. I'm currently making a test run at bitp.it where i toss ~100 constant users to them....get around 150kHash/s. So even a single Applet Miner will be faster
You don't happen to know anyone that wrote a webGL miner?*g
edit:
It may also depend on the length of the visit to your site.. not sure how it works if the users don't stay long enough to finish a share.
that's another issue with the applet miner. i've asked the developer
here if the applet miner does support nonce range splitting or not (which would help a lot on sites where users don't stay that long) but i never got an answer