A good practice will be to check out a PTC's credibility before joining it. PTC Talk is a good site to do so. It has a Scam Alert List which warns users of unreliable PTCs, a Watch List which list potential scam PTCs, payment proofs of different PTCs from users and a small review section of some PTCs.
always rememeber to do a credibility check before joining any money making program online.
5 Checks you should do:
Always check their advertising rates if they payout more than they ask for an ad something is fishy. Such a model is economicaly unsustainable.
Do a whois search, in Linux and Mac type "whois domainname".com to find info about who hosts the site. On windows you can go to whois.net and type in the domainname. If the server is located in some exotic place like China it's a sign. If the name of the owner is hidden it could also be a sign but not necessarly.
Do a Google search for the name of the site + the word scam. If you get many hits, it should ring a bell, also read the post about it on a few forums.
If there are unreasonable rewards per click like $100 or more it's a scam or at least a way to deceive people. Ptc's are always paying bewteen 1/10 of a cent to 2 cent per click. Anything more is doubtful.
If it sounds too good to be true it usually is
Note:
Some sites are more clever and build in protection to prevent legal issues. For example some put in their terms payout after 100 years or put 100 USD where USD doesn't stand for USD but for something else or they puta $ sign but it's not US dollars but some high inflated currency or a virtual currency with next to no value.
A few site that are useful when verifying sites :
http://www.beenpaid.com/
http://www.gptboycott.com/
http://www.ptcvote.com/
http://www.ptctalk.com/
The list of scam sites:
1-9
1-800-mail.com
1-dollar-mail.com
100-dollars-mail.com
100cents-1000dollars.com
100dollarsmails.com
100euromails.com
100usd.com
10dollar-mail.com
1stprofit.com
2-dollar-mail.com
2-opt.com
200cents-2000dollars.com
200dollarmail.com
200dollars-email.com
200dollarsmail.com
200eurocent-200euro.com
200euromails.com
200euromails.net
20dollarsmail.com
20euromail.com
247payouts.com
25-dollars-mail.com
25dollarsmail.com
2dollaremails.com
3-dollar-mail.com
300dollarsmail.com
30dollarsmail.com
37-21mail.com
400dollarsmail.com
500cents-500dollars.com
500cents-500dollars.net
500cents-500dollars.org
500dollars-mail.com
500pounds-and-500pence.com
50dollarsmail.com
520searcher.com
520searcher.com
5cent-emails.com
5dollarmails.com
60de.com
60dollarsmail.com
60euromail.com
6cent-emails.com
7cent-emails.com
7centsolos.com
7thheavenptr.net
8000-cash.com
80euromail.com
8848email.com
8cent-emails.com
999-mail.com
A
a-n-cash.com
aaa-mails.com
ad-fortune.com
adonlyptc.us
adsclicker.com
adsmaker.net
advertisingcentral.biz
aglocomails.com
ahacash.com
allcashmail.com
allpayoutemail.com
allyousubmitters.com
almiyachts.com
alpha-cash.com
alwayspay.com
amazingcashmails.com
american-mails.com
amigoemail.com
annies-biz.com
apachemails.com
apolloemail.com
applemails.com
appolomails.com
aprilgoldgetpaid2reademail.com
arcadian-mails.com
arcane-mails.com
arcsurvey.com
artemisemail.com
atom-mails.com
auction-emails.com
availablemail.com
awsurveys.com
B
babyloncash.com
banana-mails.com
bank-mails.com
beansngreens.com
beehivemails
best-hyip.be
bestflymails.com
beta-cash.com
bettybucks.com
bigdollat-mails
biggestdollars.com
bigpaymail.com
bluegoldemail.com
bluemoon-emails.com
bluerwebmail.com
boffopaidmail.com
bondjamesbond.net
boss-mails.com
bournemouthbreeze.com
bravevolitation.com
bugcash.com
buxeuro.com
C
calendardays.com
camel-mails.com
can-discount.com
cannabismails.com
cash-kitty.com
cash4hits.com
cashbux.com
cashcatchers.net
cashfiesta.com
cashflow-mail.com
cashnclicks.com
cashpointclicks.com
cashread.com
cashsea.com
casino-mails.com
cat-mails.com
cat-ptr.com
catch-cash.com
cclass-act-clicks.com
cgcash.info
charm-mail.com
chobit-mails.com
chobitmails.com
chobitsmails.net
class-act-clicks.com
classical-mail.com
click-mails.com
clickbux.org
clickbuxx.com
clickingmoney4u.com
clickoly.com
clicksformoney.com
clicktopsites.com
clonebux.com
clown-mail.com
coast-mail.com
coastmail.com
coffee-mails.com
coffeeclubemails.com
comet-mails.com
compactmails.com
cooperativemail.com
copymails.com
cosmicwealth.com
coverclicks.com
cowboy-mail.com
crabmails.com
crazy-4-cash.com
crazysweetheartmail.com
cream-mails.com
