Something is wrong - My First Listing Questions

Well, am trying to list my first auction but something is wrong as my site is PageRank -1 and i have checked all those page rank checkers on google and they all say it is 1/10 but on Flippa it says 0 ? Why ? How do i fix this ?

and once am done creating my auction how do i pay them i mean what payment methods they accept ?

and is paypal secure to accept payments ? i mean what if they take my site and charge back me ?

Thanks in Advance

Sometimes flippa doesn't show the site statistic properly, like yahoo backlinks number.

Paypal is ok for small numbers, but if you dealing above $1k+ then definitely use escrow.

Yup yeah i actually contacted them about this and they updated my stats, yeah paypal does not seem to safe if you are doing huge transactions.