eHarmony UK , the UK site from the world’s most famous compatibility testing site will be offering free communications to all registered users on the Valentine’s day weekend.
That’s from Friday the 13th- Sunday the 15th. If you register on the site between now and then you will be able to send and receive messages from your matches for free, as well as the usual free features of being able to review your matches (and, of course, do the personality test, which is what you need to do to get any matches in the first place!)
You basically get full use of the site’s features for free for a weekend!
If you’re based in the US or Canada, you can also take advantage of the free communications weekend by registering on the site between now and the end of the Valentine’s day weekend.