23.06.2010 WTS v2.22 PS
• All system interfaces are multi-language. User chooses language (English/Russian)
  when logging in to the system.
• Two new policies used for defining the uniqueness of traffic: related to traffic 
  within one category, related to a user’s traffic type (uniqueness for link).
• A separate policy of calculating hit uniqueness can be set for each user.
• There are several ways to define traffic uniqueness: by IP, by cookie or both combined.
• Affiliate program aimed at attracting new users (a partner gets a percentage 
  of referred users' earnings).
• Black list of sites. Informing administrator in case a user offers traffic from 
  blacklisted sites.
• Mass payouts into WebMoney payment system accounts.
• Payout log with an integrated feature allowing returning money into the account (MoneyBack).
• Filtration of traffic by language of the browser and by linking pages (the pages 
  that the traffic comes from).
• The system offers traffic type search and mass edit features to the administrator.
• Bugfixes and minor additions.

19.07.2009 WTS v1.24 PS
• Bugfixes and minor additions.

27.05.2009 WTS v1.23 PS
• Bugfixes.

25.11.2005 WTS v1.20 PS
• Detailed administrative statistics for categories for the bought traffic. It can be disabled 
  for economy of a disk space.
• In administrative zone the tooltips of listed sellers contains category name instead of 
  its number.
• The opportunity to limit amount of the shown countries at addition of the new filter of the
  traffic for the buyer has appeared.
• Bugfixes and small improvements.

30.10.2005 WTS v1.11 PS
• Bugfixes and minor additions.

24.10.2005 WTS v1.11 PS
• Administrative statistics for the sold traffic: 
  - by the countries
  - by referrers
• Log of money charges to accounts of traffic buyers.
• Post features of system are improved:
  - sending the letter to administrator at registration of the new seller or the buyer,
	  can be disabled;
  - sending the message to the seller and the buyer after registration, can be disabled;
  - sending the message to the buyer at updating the money account, can be disabled;
  - sending the message to the buyer at the termination of money on the account, can  be disabled.
• Bugfixes.

20.04.2005 WTS v1.04 PS
• Bugfixes and minor additions.

23.03.2005 WTS v1.02 PS
- documentation amount increased
• Bugfixes and minor additions.

03.03.2005 WTS v1.01 P
• Additional parameters are transferred from the entry link to the exit link 
  (through QUERY_STRING).
• Bugfixes and minor additions.

07.02.2005 WTS v1.00b PS
• Hourly traffic statistics, for both the administrator and sellers.
• Default traffic filters (by types of purchased traffic).
• The seller can choose a traffic filter (traffic types) among the administrator-predefined types.
• Traffic can be sold on credit.
• Disabling referrer statistics for buyers.
• Third-party scripts may be used to transfer money to the buyer's account.
• Traffic buyers and sellers can create accounts by themselves.
• Administrator interface for mailing buyers and sellers was added.
• Mailing form for messaging the administrator added for sellers.
• User interfaces were reworked and improved.
• Several fixes introduced.

29.12.2004 WTS v0.99.109b PS
• Bugfixes and minor additions.

22.11.2004 WTS v0.99.106 P
• Bugfixes and minor additions.

14.10.2004 WTS v0.99.098 P
• Filters for purchased traffic. Distributing traffic into groups: by countries 
and properties (Uniq, Proxy, Cheat, SE Bots, Referrer,
JavaScript , Cookie, Java, IE,   Connection Type: lan/modem/unknown/All).
• Improved anti-cheat protection.
• Detailed statistics on every used traffic parameters, filters,
separate countries and cheat methods was introduced.
• Rare traffic filtering from frames was introduced.
• Some bugfixes. 

05.08.2004 WTS v0.98 P
• Detailed subdivision of purchased traffic (more than 10 parameters).
• Advanced anti-cheat system introduced, statistics for cheat and lost
hits implemented.
• Detailed cheat log.
• Several types of filtering the purchased traffic.

27.06.2004 WTS v0.97.054 PS
• Bugfixes and minor additions.

22.06.2004 WTS v0.97 PS
• Member zone for traffic buyers introduced.
• Referrer statistics added for sellers and buyers.

12.06.2004 WTS v0.96 PS
• Traffic subdivision into categories implemented.
• Referrer statistics on every seller and buyer added for the administrator.
• Ability to block a seller's account added.

08.06.2004 WTS v0.95 PS
• Bugfixes and minor additions.

04.06.2004 WTS v0.94 PS
• Statistics for buyers introduced.

27.05.2004 WTS v0.93 PS
• Force periods for distributing traffic were added.
• Several bugfixes.

18.05.2004 WTS v0.92 PS
• Bugfixes and minor additions.

17.05.2004 WTS v0.91 PS
• Adding and editing traffic sellers introduced.
• Switching between two administrator zones for buying and selling traffic.
• Several bugfixes.

05.05.2004 WTS v0.90 P
• Ability to use server GeoIP base (mod_geoip) added.

02.05.2004 WTS v0.8 P
• Member zone for traffic sellers added.
• System time zone option introduced.

29.04.2004 WTS v0.7 P
• Several types of statistics for sellers (daily, for the last 7/30
days, monthly).
• If a seller did not specify where the non-purchased traffic should be
returned, the traffic goes to the Return Url of noref account.
• Main menu changes (balance column added to the lower table).
• Several bugfixes.

27.04.2004 WTS v0.6 P
• The system can buy traffic from 20 countries.
• The system can return non-unique traffic and proxy traffic.
• Administrator interface available.
• Administrator can create seller accounts.
• Statistics for every seller.
• Countries detected by system internal GeoIP database.
• Interface for import databases of popular suppliers into the GeoIP
database added.
• Interface for changing the administrator password added.
• Error log available.