Free Mixing of Genders
"“Thus free mixing and meeting of sexes be it in form of co-ed schools / colleges / offices or parties or so called love-birds is prohibited.”
so, do we have to start finding jobs where its female only, or male only organizations? We have to be realisitic here. I don’t know about you, but that is nearly impossible to do. are we living in sin if we have to do a school project together where there is someone in the group of the opposite sexan have to talk to them about it? Do I not shake hands when my male employer who congratulates me on a job well done, or do I refuse? What about when I go to my friend’s wedding? should I avoid dressing up etc in fear that all the larkas eyes might suddenly befall on me and me only, cuz you know, that is guaranteed to happen and it will be my fault. should I not dance even if it’s only in the women’s section, cuz someone might record it and show it to a boy 
I can go on and on
some things are impractical to impose
Thats a lame attempt to promote personal blogs or webpages. I’ll remove the link now. You are welcome to share the content here (without link)
Don't know what the OP has shared but from the title i get it talks about prohibition of free mixing of genders.
it can be interpreted that what is prohibited is "Free mixing" and not the interaction between the opposite genders for necessity. We can presume that if females and males have to interact for work purposes, school projects, etc. then this cant be treated as free mixing. But if they are mingling unnecessary, getting involve in hansi mazak, idle talks etc. then from Islamic perspective it is prohibited.
As for getting dress up foe weddings/outings etc. if women are doing that within the Islamic code of dressing then don't think it is prohibited.
Also, on hand shakes- have personally seen many women in corporate sector politely refusing for hand shakes with males. I think nothing wrong in sticking to your belief system.
I don't think it's a better idia to mix the gender ..