If you are planning to come to Paris this weekend, here are a few websites you may want to keep an eye on:
The Metro: http://www.ratp.info/orienter/trafic.php (only available in French - the English section of the site contains no information about the strikes.
SNCF: (including Eurostar, Thalys...): http://www.infolignes.com/previsions.php?zoneId=1&zoneName=Nord (again, no English version, but just know that 'supprimé' is bad news!).
The airports: http://www.aeroportsdeparis.fr/ADP/en-gb/passagers/home/
Currently Eurostar trains are unaffected by the strike and the Metro is running almost as normal, but delays can be expected at airports and on the trains and buses between the airports and Paris.
You should also be aware that another day of protest has been organised for this Saturday (16th) which will mean many people in the streets, but also the possibility of some sites and museums being closed.