GoldmineClicks is another PTC/PTR with lots and lots to do. One thing I found very impressive about this site is how fast it loads even though there's lots of graphics - I often have some slow-loading problems with sites that run this type of PTC script, not this one! It's a really nicely done site graphically too.
The site also has a weekly referral contest - the winner gets 5000 link credits - that's a pretty sweet deal. It also has a really nice referral level deal - 10% referral earnings, 10 levels deep - and pays you up to $0.01 per click.
GoldmineClicks has a $1 minimum cashout via AlertPay (which I generally recommend for click sites) and PayPal (and lists E-gold too, at least I guess they still pay that way). And it is a paying site - my upline/friend/colleague has proof of payment from this one, so I felt pretty confident in joining up. The site has been open since January 2008.
International members are welcome - if you're not already a member, check it out today!