I met my now husband on plenty of fish :)
So it IS possible!
However, I also spoke to quite a few idiots. As did my now dh. Including one who seemed more interested in the fact I already had a child than anything else (very creepy, instant block - we only got as far as messaging through the site).
I think you have to be quite brutal. If there's anything about their profile, the way they write, their photo that you don't like 100% then that for me was a block and move on. I lost count of how many I blocked.
When I registered for the site I also put my address as 30 miles away from where I actually lived as I didn't want local people searching for me or people I knew seeing me on there... I figured I could search for the local ones myself.
I put that I had a child, but I didn't say anything more than that about my daughter. I didn't want to attract weirdo's. I was astounded at the number of people who have photos with their kids on there!!
I actually found dh's profile myself and I messaged him. He was out of my usual age range by one year (!!) but I thought I'd have a look in a lower age range and he seemed really nice... Liked the same music, same interests, seemed to be able to write in whole sentences (!!) etc... I sent him a chatty long message (I'd also block people who just wrote one liners - where's the effort???!) and he wrote me a long reply back.. We spoke on the phone for a week. Then we met for a coffee during the day (day times are better, no expectations of anything else! and gives you time to come away and think!)... Before we knew it 3 hours had flown by and he texted me on the way home to say he'd like to see me again if I was interested. Hell yeah!! :)
We dated for about a year and he met dd who loves him to bits. We got married this year and our ds is due in 5 weeks time!
And this is coming from me who's had nothing by horrible relationships including an ex husband who left after 8 years for his ex girlfriend (!!) and then a fuckwit of an ex who used me for sex for 6 months and then fucked off round the world saying he needed to find himself.... sheesh.
The best advice I can give anyone looking for love is don't give up... and don't have sex too quickly!! I think we waited about 2 months before having sex... And that included him staying over at my house when dd was away as there were no trains for him to get home!
There's nothing wrong with having sex if you want to, but meeting a long term partner should be about the connection you have with each other as people, the talks, the dates you go on, the journey. Not the removing the undergarments.
But hey maybe I'm old fashioned.