I'm 99.99% positive that CoinCleaner is a scammer (save 0.01% for miracle). If anyone has doubts about it, they are the reason why scams run so rampant in Bitcoin community. His Mac selling thread screams con so bad, it can be heard from two boards away (bitcoin only mac online store, really?). Yes, he mentioned escrow, but then (according to Tomato), tried to back off from it. Even if escrow was used, there is still possibility of using stolen credit card, hijacked paypal account, or just forged paypal money transfer confirmation email, if bought from site like Craigslist. You can buy shitload of stolen credit card information online for few dollars per thousand. Sucking them dry is the hardest part. If you buy goods online (easiest option), you need access to an address to have them shipped to, risky and not so straightforward if you think about it. Now imagine if you could just sell highly desirable, expensive computer online, for untraceable currency. Genius, isn't it? CoinCleaner cleans your stash and disapears, while you, if unlucky, get state sponsored holiday and free colon enlargement service.
Also, recently he tried to get a loan on very (read: too) favorable terms, guess the outcome.
https://bitcointalksearch.org/topic/need-25btc-loan-asap-30btc-payback-119384