Supposedly, acquiring a strong track record may make an individual identity eligible for bonuses and higher-value tasks, but my experience with the task source isn't long enough to even know what that would look like, to a CoinWorker.
Could a malicious individual enter somebody else's BTC address and screw up their accuracy/reputation/whatever?
Yes: this is a potential downside of letting anyone 'work' on behalf of any address, and advertising the payout publicly (at the CoinWorker.com site, or simply via people deducing what's happening the global blockchain).
There isn't any direct profit in it, so it's only of interest to people of pure malice: because they recognize the payout addresses, or simply dislike any high-earners they notice.
Still, I've implemented a countermeasure that will be documented soon on the site. (I didn't want to promote it until there's evidence of such behavior or discussion.)
You can add to the end of your address an extension like "+WHATEVER". (That is, a plus-sign and then another string of your choosing.)
The combination of your address *and* your extra string will determine your worker-reputation. But, only the address portion is significant for payments or displayed in public logs.
So, by using a secret extension, others can't 'spoil' your reputation (or hijack any tasks-in-progress).
Note that this could also help several people in good faith work on behalf of the same address, without interfering with each other even by innocent mistake. (Husband and wife, people who all want to donate to a public project address, etc.)
There will be an explanation and form to help people use this feature soon.
By the way, there
are some tasks available, but they're a tiny value (4pts) and tiny number (<200), so I'm not announcing them. I still expect a larger variety/volume of tasks to arrive any day now.
{Warge