Chemistry and Numbers

Welcome to Chemistry and Numbers. This website accompanies the Chemistry and Numbers series of books. We have added as many online dating sites that we feel would give you plenty of choices. You may use this site as a resource to compare online dating sites.

It's a totally free matching service. It's also extremely accurate, as long as (a) you're honest, and (b) you know what you want. We don't claim to evaluate you perfectly, but we do claim to find someone who claims to fulfill your claimed requirements, exactly. We firmly believe that most matching sites are just personals services; their "matching" systems are nonexistent or overly subjective.

While we have a small team here, we all take math (and all that math implies) very seriously. OkCupid is a fun project for us for a variety of reasons, only one of which is the actual content. We aim to be the best matching service on every front: superior technology, better math, better psychology. And of course, it's free, unlike all the others.

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Mate1 is one of the hottest dating sites on the internet - and totally FREE for women! Mate seekers can meet hot singles in their area instantly.There are a number of things you can do to improve your chances of getting noticed on Mate1.


ADD A PHOTO! We can’t emphasize this enough. Members with photos get 10 times more responses.

ADD A VOICE PROFILE. Members with voice profiles get 8-10 times more responses.

BECOME A FULL MEMBER to get top ranking in search results.

Make sure you’ve filled out every section of the profile questionnaire, especially your personal essays and tastes.

Try making the first move: send an e-mail, voice mail or instant message to another member.

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True.com’s safer online dating service

Lavalife (or Webpersonals until 2001) stands alone among online dating sites. The most notable feature of Lavalife is the fact that registration is free and there are no monthly fees. This is because most contact with other members of the site requires the use of credits. As a free member, you can reply to messages and view videos, but sending emails or instant messages require expending credits.


The credits do allow substantial time for communications, however. The first email message is six credits, and all subsequent messages to the same recipient are free. Six credits buy a twenty minute instant messaging session, and twelve credits buy an hour. Two credits will extend your chat time by five minutes.
Lavalife allows great flexibility in match searches. There is no compatibility profile, as is in many online dating sites, so the user is forced to use their own judgment to make a match. Users can search for friendships, long-term relationships or casual encounters. When coordinating a casual encounter, there are several options to narrow the search, including blindfolds, spankings and aggressiveness.

Again, unique to Lavalife, is the ability to hide or change your profile name. You can also log in without an active profile name, allowing you to chat in a hidden mode. This would allow the user to “start over� after meeting an undesirable match.

SinglesNet.com is among the easiest dating sites in terms of navigation and use, and the capability to create custom chat rooms make communication with other members private and fun. Although there are relatively few features, the volume of members makes finding compatible matches a near certainty.

Unlike some sites, removing your profile is very easy: simply clicking “remove� in the account settings automatically removes your profile.

iMatchup.com Although the site is relatively successful with 3 million members, there is little that is unique about the site. The main draw seems to be the number of users, which in itself is not extraordinary.

The site itself is relatively easy to navigate, and the matches seem to be of a slightly higher quality than other sites, so it is worth checking out.

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CupidJunction.com, in many ways, is very similar to most dating sites. However, they offer a separate paid feature called “Live Dating Pro� that causes the site to stand out from the crowd. Live Dating Pro matches the user with a live relationship expert that is on call via email and chat to offer dating advice and tips.

The site itself is very easy to navigate, has a strong matching analysis. To back it up, all matches display a match percentage, to make it easier to determine your compatibility.

AmericanSingles.com has been on the scene since the inception of online dating, and boasts tens of thousands of singles online every day. Although the name would seem to imply that the site is only for Americans, there are a number of users from other countries. The majority of members, however, are American.

One of the site’s greatest features is the historical information that is made available to the user. As a member, you are able to see who you have viewed in the past, who has viewed you, who has saved (“hot listed�) your profile and the exchange of one line “teases�.

One unique feature of AmericanSingles is that it allows access to the chat room to both members and non-members. You can also start your own chat room. The only major flaw in the chat room is that it is unmoderated and has a tendency to get overcrowded. To further the potential confusion, chat room users are able to highlight text and change font colors, which can make the chat difficult to read.

AmericanSingles seems genuinely interested in helping members find quality matches. From its easy to use interface and open ended communications system to its’ exhaustive advice section, AmericanSingles rates among the best of the net.