how would you avoid fraud, scams etc. ?

Main reasons for accepting bitcoin are lower prices for payment processing and irreversible transactions. Downside is converting them to USD/EUR/etc. which is sometimes (bottom-line!) more expensive than you would think. Ideally, you would have both your payables and receivables in bitcoins - but we're not there yet 

stay away from paypal, unless you want your account frozen...

These complex and difficult calculations are what keeps the block chain secure. In other words, it's what guarantees that bitcoins are not double-spent, transactions cannot be reversed etc. There is no other use, but isn't that enough?

if you make this new exchange work, your kid will sure be grateful  milk is more important now though!

what about writing wallet.dat into your genome? there's plenty of junk DNA inside it already, this would put it to good use! a biotech start-up anyone?

PM me with the details.

Wagner, Beethoven and Mozart. Mozart seems to increase the hash rate of the mining rig! (just kidding...)

clearcoin only takes your bitcoins, and they do not get involved if anything goes south. not good enough.

davout, would you care to elaborate?