LinkGrand

LinkGrand is listed as Elite in PTC investigation site.  The site has been online since 2006.  The number of ads available will depend on your location (geo targeted) and each ad will give you $0.003.  The referral commission is 30% so you will earn approximately $0.0009 for each ad your referral clicked.  You can cash out for as low as $5 through Paypal.

Buxp

Another PTC site that I joined is buxp.org.  The site is listed in the Elite list in PTC investigations because it operates for as long as three years now, a great achievement for this kind of site.  The minimum cash out is $7.99 for USA, UK and Canada while for other countries is $17.99. The waiting time for the cash out to transfer to your Paypal or AlertPay is 30 business days.

Clicksia

Another PTC site that I recently joined is Clicksia.  Upon searching the site's status in PTC Investigations, it's in the Elite list.  The site has minimum pay out of $1 through your PayPal or AlertPay account.  The site was created since August 17, 2007 and still paying.  A great achievement for this kind of site and according to PTC Investigations, it does not have any major issues from their member.

Clixsense

The first PTC site that I joined. I'm a member of this site since July 2011.  The minimum cashout of this site is $10.  The payout methods are Paypal, Alertpay and Check.  The site has been online for 4 years so it really established its reputation for being a legitimate PTC site. In order to earn, you have to click the ads posted in the "View Ads" tab. 

PTC Investigations

 PTC Investigations is a site where it verifys the validity of any PTC sites.  This is where I go before considering to join a PTC site. The PTC sites were categorized as Elite Sites, Legit Sites, Ongoing List, Watch List and Scam List to name a few.