Chuck! ... It's really simple. ...
On the Internet: IN GOD WE TRUST ... Everybody else is suspect.
I can't address Twitter vulnerabilities specifically except to say that I've researched some of the "App" creators and discovered some are very skilled, cunning and scary and I choose to avoid most of these apps however cute and useful they may appear.
Today's Internet is like free love. ... Unless you're really, really careful; .. You're going to get zapped. (Not if! ... But rather; WHEN).
In addition to some Industrial strength filters. .... I use dozens of disposable email addys and when there's a hint of impropriety that addy is history.
Another area of danger that we don't have much control over is emails we receive that have been sent to multiple recipients listed on the "To:" or "Cc:" field which results in your address being stored on a dozen or so computers which may not be "Bot Proofed" and we awaken to discover every name in our address book has received junk mail ( .. and worse). from you.
When I receive a multiple recipient or Fwd letter ... The sender (Including friends). gets a polite note with solutions. .... The next time they get a strong note and the 3rd brings a request to remove me from their bulk list and a notice that next time will result in a letter to their ISP. More..
Another area of vulnerability is "Harvestable" email addresses (EG Mailto:Chickandco@Happiworks.com). on your pages which will be crawled, harvested and sold. .... Tell your Geek that you want non-harvestable contact links on your pages.
Make sure your filters are up to date and you should be OK. TrendMicro's Housecall is a good place to start ...
See also ... Your WWW Site is a banquet for stalkers!
Teddy Towncrier CPP Towncrier-Media.com Supercharging Your Visions.
Private Reply to Teddy Towncrier (new win)